[OVERVIEW]
Though Regirock faces challenges in distinguishing itself in the Balanced Hackmons metagame, its stats and typing combine to provide it with a niche as a bulky pivot. Its Rock typing can initially appear to be a curse in a metagame infested with Thousand Arrows and other attacks that prey on the type's weaknesses. However, the typing also sports key resistances to Flying and Fire, which notably allows Regirock to take Aerilate-boosted attacks with ease. This, combined with Regirock's 80 / 200 physical bulk to absorb Thousand Arrows, means that it sports the ability to comfortably check Mega Rayquaza, as well as countering other threats like Ho-Oh. Regirock's Rock typing also grants it STAB on Diamond Storm, allowing it to apply offensive pressure on a variety of top-tier threats while operating in its defensive capacities. Unfortunately, it faces stiff competition from Mega Tyranitar and Mega Diancie offensively and from Registeel and other bulky Steel-types defensively. Overall, however, Regirock is an excellent pivot that can help teams cover key weaknesses to prominent offensive threats while maintaining momentum.
[SET]
name: RegenVest
move 1: Diamond Storm
move 2: U-turn
move 3: Sacred Fire / Nuzzle
move 4: Knock Off / Infestation
item: Assault Vest
ability: Regenerator
nature: Impish
evs: 248 HP / 88 Atk / 36 Def / 136 SpD
[SET COMMENTS]
Moves
==========
Diamond Storm is Regirock's preferred STAB move, dealing decent damage against most foes that don't resist it while having a nifty 50% chance to boost Regirock's Defense. U-turn is a great move for grabbing momentum, allowing Regirock to exploit its low Speed to give teammates a free switch. Sacred Fire allows Regirock to cripple physical attackers like Mega Mewtwo X on the switch, as well as allowing it to threaten Shedinja somewhat. However, Nuzzle is also an option to cripple offensive Pokemon in general. Knock Off has obvious, general utility; notably, it allows Regirock to neuter the offensive power of threats carrying Life Orb or other boosting items, as well as removing Eviolite from Chansey and stopping Toxic Orbs on the switch. Knock Off also discourages cleric support alongside Poison Heal users even once their Toxic Orbs are set—while the poisoning initially remains, removing the Toxic Orb means that Poison Heal will stop working if your opponent elects to use Heal Bell or Aromatherapy. Finally, Infestation is another option to surprise Shedinja if you opt against running Sacred Fire.
Set Details
==========
The EV spread given allows Regirock to always avoid the 2HKO from Adamant Sky Plate Mega Rayquaza's Thousand Arrows or Boomburst after Stealth Rock. It also affords Regirock the ability to check Mega Gengar in a pinch, as it is not OHKOed by +2 Spooky Plate Judgment or Secret Sword. However, if Mega Gengar carries Spore, Regirock will struggle to check it. The rest of the EVs are poured into Attack in order to give Regirock as much offensive presence as possible. Regenerator enables Regirock to recover passively without wasting turns to do so, while Assault Vest buffs up its relatively low Special Defense and synergizes well with Regenerator.
Usage Tips
==========
Regirock thrives on forced switches; U-turn, Sacred Fire, Nuzzle, and Knock Off are all tools that you can capitalize upon and grab momentum or cripple the foe. Because of Regirock's demonstrable efficacy in crippling foes on the switch, it'sa good idea to identify the members of your opponent'steam that Regirock can force out and exploit to the fullest. Early-game, it's also a good idea to make copious use of U-turn to identify what the opponent's strongest answer to Regirock is. Even later on in the game, U-turn is a great, safe option to snag momentum against foes that Regirock walls. Because Regirock is incredibly susceptible to status, you should scout around to identify which members of the opposing team can burn it or put it to sleep and act accordingly—getting hit with either of these statuses can leave Regirock functionally useless. Finally, if you opt to use Infestation, this should be hidden against opponents running Sturdy Shedinja until you can bait the Shedinja to come in on Regirock's attacks; otherwise, a smart opponent will simply pivot out and make it quite difficult to land the Infestation.
Team Options
==========
Poison Heal Giratina makes for a fantastic teammate to Regirock. Not only can it counter an Imposter of Regirock with ease, but it also boasts excellent defensive synergy with Regirock and can soak up status for it. In addition, Regirock's slow U-turn gives Giratina an easy way to activate its Toxic Orb or nab an extra turn of Poison Heal recovery. If Regirock doesn't run Infestation, a Mold Breaker Pokemon with Pursuit such as Mega Gengar, Giratina, or Mega Gyarados can also be very useful to take care of Shedinja, once again capitalizing on Regirock's U-turn to ease prediction.Entry hazard control is essential to Regirock's success, making a solid Defogger such as Giratina or Registeel an excellent teammate. Ideally, Regirock would also appreciate entry hazards down on the opponent's field to capitalize on with its U-turn; however, as keeping hazards off of its own side of the field is the primary concern and Defog is the most reliable way to do this, stacking hazards is often forced to take a back seat. Another way to limit hazards is with a Magic Bounce user (again, Giratina and Registeel are prime contenders), which can also be useful to redirect the status that Regirock attracts like a magnet; however, Mold Breaker can easily bypass it. While Regirock is certainly bulky, it struggles to switch in against Pixilate and, to a lesser extent, Refrigerate attackers such as Mega Diancie and Kyurem-B. Therefore, a secondary check to these two must be included as a teammate. However, Regirock's alleviation of the pressure from Aerilate allows greater flexibility in checking the other two –ate Pokemon. Finally, a cleric such as Registeel or Mega Audino is a good idea for a teammate, preventing Regirock from becoming dead weight if put to sleep or burned unexpectedly, although it synergizes poorly with Poison Heal on other teammates.
[STRATEGY COMMENTS]
Other Options
==========
Regirock's final moveslot is relatively flexible. Icicle Spear and Ice Shard are both useful additions for their abilities to help out against Mega Rayquaza; the first can hit Gale Wings Mega Rayquaza through Subsitute, while the second can allow Regirock to save a turn of tanking damage by KOing Mega Rayquaza with priority. A reliable damaging move like Seismic Toss or Night Shade is a possibility, but as Regirock's offense is relatively well rounded between Diamond Storm and Sacred Fire, this is often a redundant option. Rapid Spin is another potential inclusion, but Regirock is unfortunately a terrible user of the move, as it gives two of its checks, Shedinja and Giratina, free switches in. A phazing move such as Circle Throw or Dragon Tail is also an option to nail foes trying to set up and potentially bring in something against which Regirock can U-turn out with impunity. However, due to Regirock's low Speed and lack of immediate recovery, this could potentially backfire—anything you aim to phaze will likely have the capacity to leave a mark on Regirock (otherwise, there is very little reason to phaze it), and after being hit by a strong attack,Regirock will often be forced to switch out blindly against a fresh attacker that could cripple or even KO it before it can get off a U-turn. Clear Smog is another option to achieve the same goal of blocking stat boosting. Finally, Metal Burst is an option that synergizes well with Regirock's low Speed, but Regirock's comparatively low HP by Balanced Hackmons standards greatly lowers the move's effectiveness.
Alternatively, one could attempt a Sand Stream set with Leftovers or Safety Goggles to provide a similar buff to Special Defense as Assault Vest does. Sand Stream also holds the allure of discouraging Shedinja from switching in. By sacrificing Regenerator, however, Regirock is forced to spend valuable time recovering, which sacrifices much of the niche that it otherwise holds. Between extra chip damage, a free item slot, and the ability to use status moves, Sand Stream Regirock may appear to be a strong option, but it unfortunately faces strong competition from Flash Fire Steel-types, which play a similar role, unless you plan to use Regirock as a weather setter for a team built around sand. If this is not the case, however, RegenVest is the superior choice, as it is what Regirock excels at.
Checks and Counters
==========
**Poison Heal Giratina**: Once its Toxic Orb is activated, Poison Heal Giratina is impervious to anything Regirock can do. It can easily switch in and status or otherwise cripple Regirock, forcing Regirock to U-turn out on the switch or hard switch out once Giratina is in. However, if Giratina has not yet activated its Toxic Orb, Regirock can threaten it with a Sacred Fire, Nuzzle, or Knock Off.
**Lum Berry Sturdy Shedinja**: If Regirock lacks Sand Stream, Knock Off, and Infestation, Shedinja can switch in with absolute impunity and Recycle its Lum Berry if statused. From this position, Shedinja can threaten Regirock with Endeavor or pivot out with an even slower switching move than Regirock's U-turn, stealing momentum.
**Flash Fire Steel-types**: Flash Fire Steel-types can easily switch in on Regirock, tanking its moves with ease and notably being immune to its Sacred Fire. Regirock can use Knock Off against them, but that is unfortunately the extent of its ability. Meanwhile, they can threaten Regirock back with status or attempt to wear it down with STAB Steel-type attacks.
**Protean Mega Mewtwo**: While they struggle to switch in safely, Protean Mega Mewtwo X and Y can both threaten Regirock with STAB Thousand Arrows and Earth Plate Judgment, respectively. Due to Regirock's lack of immediate, reliable recovery, it is often forced to switch out of these attacks to avoid being KOed (Mega Mewtwo X's Thousand Arrows is a clean 2HKO, whereas Mega Mewtwo Y has a chance to OHKO with Earth Plate Judgment). To add insult to injury, once Mewtwo changes its type to Ground with Protean, it cannot be affected by Nuzzle and it resists Diamond Storm.
**Mega Diancie**: Mega Diancie can easily switch in on much of Regirock's moveset thanks to its typing, and once it does, it can threaten Regirock with a powerful Pixilate-boosted Boomburst. However, Mega Diancie is relatively vulnerable to Regirock's Diamond Storm and Sacred Fire.
Though Regirock faces challenges in distinguishing itself in the Balanced Hackmons metagame, its stats and typing combine to provide it with a niche as a bulky pivot. Its Rock typing can initially appear to be a curse in a metagame infested with Thousand Arrows and other attacks that prey on the type's weaknesses. However, the typing also sports key resistances to Flying and Fire, which notably allows Regirock to take Aerilate-boosted attacks with ease. This, combined with Regirock's 80 / 200 physical bulk to absorb Thousand Arrows, means that it sports the ability to comfortably check Mega Rayquaza, as well as countering other threats like Ho-Oh. Regirock's Rock typing also grants it STAB on Diamond Storm, allowing it to apply offensive pressure on a variety of top-tier threats while operating in its defensive capacities. Unfortunately, it faces stiff competition from Mega Tyranitar and Mega Diancie offensively and from Registeel and other bulky Steel-types defensively. Overall, however, Regirock is an excellent pivot that can help teams cover key weaknesses to prominent offensive threats while maintaining momentum.
[SET]
name: RegenVest
move 1: Diamond Storm
move 2: U-turn
move 3: Sacred Fire / Nuzzle
move 4: Knock Off / Infestation
item: Assault Vest
ability: Regenerator
nature: Impish
evs: 248 HP / 88 Atk / 36 Def / 136 SpD
[SET COMMENTS]
Moves
==========
Diamond Storm is Regirock's preferred STAB move, dealing decent damage against most foes that don't resist it while having a nifty 50% chance to boost Regirock's Defense. U-turn is a great move for grabbing momentum, allowing Regirock to exploit its low Speed to give teammates a free switch. Sacred Fire allows Regirock to cripple physical attackers like Mega Mewtwo X on the switch, as well as allowing it to threaten Shedinja somewhat. However, Nuzzle is also an option to cripple offensive Pokemon in general. Knock Off has obvious, general utility; notably, it allows Regirock to neuter the offensive power of threats carrying Life Orb or other boosting items, as well as removing Eviolite from Chansey and stopping Toxic Orbs on the switch. Knock Off also discourages cleric support alongside Poison Heal users even once their Toxic Orbs are set—while the poisoning initially remains, removing the Toxic Orb means that Poison Heal will stop working if your opponent elects to use Heal Bell or Aromatherapy. Finally, Infestation is another option to surprise Shedinja if you opt against running Sacred Fire.
Set Details
==========
The EV spread given allows Regirock to always avoid the 2HKO from Adamant Sky Plate Mega Rayquaza's Thousand Arrows or Boomburst after Stealth Rock. It also affords Regirock the ability to check Mega Gengar in a pinch, as it is not OHKOed by +2 Spooky Plate Judgment or Secret Sword. However, if Mega Gengar carries Spore, Regirock will struggle to check it. The rest of the EVs are poured into Attack in order to give Regirock as much offensive presence as possible. Regenerator enables Regirock to recover passively without wasting turns to do so, while Assault Vest buffs up its relatively low Special Defense and synergizes well with Regenerator.
Usage Tips
==========
Regirock thrives on forced switches; U-turn, Sacred Fire, Nuzzle, and Knock Off are all tools that you can capitalize upon and grab momentum or cripple the foe. Because of Regirock's demonstrable efficacy in crippling foes on the switch, it'sa good idea to identify the members of your opponent'steam that Regirock can force out and exploit to the fullest. Early-game, it's also a good idea to make copious use of U-turn to identify what the opponent's strongest answer to Regirock is. Even later on in the game, U-turn is a great, safe option to snag momentum against foes that Regirock walls. Because Regirock is incredibly susceptible to status, you should scout around to identify which members of the opposing team can burn it or put it to sleep and act accordingly—getting hit with either of these statuses can leave Regirock functionally useless. Finally, if you opt to use Infestation, this should be hidden against opponents running Sturdy Shedinja until you can bait the Shedinja to come in on Regirock's attacks; otherwise, a smart opponent will simply pivot out and make it quite difficult to land the Infestation.
Team Options
==========
Poison Heal Giratina makes for a fantastic teammate to Regirock. Not only can it counter an Imposter of Regirock with ease, but it also boasts excellent defensive synergy with Regirock and can soak up status for it. In addition, Regirock's slow U-turn gives Giratina an easy way to activate its Toxic Orb or nab an extra turn of Poison Heal recovery. If Regirock doesn't run Infestation, a Mold Breaker Pokemon with Pursuit such as Mega Gengar, Giratina, or Mega Gyarados can also be very useful to take care of Shedinja, once again capitalizing on Regirock's U-turn to ease prediction.Entry hazard control is essential to Regirock's success, making a solid Defogger such as Giratina or Registeel an excellent teammate. Ideally, Regirock would also appreciate entry hazards down on the opponent's field to capitalize on with its U-turn; however, as keeping hazards off of its own side of the field is the primary concern and Defog is the most reliable way to do this, stacking hazards is often forced to take a back seat. Another way to limit hazards is with a Magic Bounce user (again, Giratina and Registeel are prime contenders), which can also be useful to redirect the status that Regirock attracts like a magnet; however, Mold Breaker can easily bypass it. While Regirock is certainly bulky, it struggles to switch in against Pixilate and, to a lesser extent, Refrigerate attackers such as Mega Diancie and Kyurem-B. Therefore, a secondary check to these two must be included as a teammate. However, Regirock's alleviation of the pressure from Aerilate allows greater flexibility in checking the other two –ate Pokemon. Finally, a cleric such as Registeel or Mega Audino is a good idea for a teammate, preventing Regirock from becoming dead weight if put to sleep or burned unexpectedly, although it synergizes poorly with Poison Heal on other teammates.
[STRATEGY COMMENTS]
Other Options
==========
Regirock's final moveslot is relatively flexible. Icicle Spear and Ice Shard are both useful additions for their abilities to help out against Mega Rayquaza; the first can hit Gale Wings Mega Rayquaza through Subsitute, while the second can allow Regirock to save a turn of tanking damage by KOing Mega Rayquaza with priority. A reliable damaging move like Seismic Toss or Night Shade is a possibility, but as Regirock's offense is relatively well rounded between Diamond Storm and Sacred Fire, this is often a redundant option. Rapid Spin is another potential inclusion, but Regirock is unfortunately a terrible user of the move, as it gives two of its checks, Shedinja and Giratina, free switches in. A phazing move such as Circle Throw or Dragon Tail is also an option to nail foes trying to set up and potentially bring in something against which Regirock can U-turn out with impunity. However, due to Regirock's low Speed and lack of immediate recovery, this could potentially backfire—anything you aim to phaze will likely have the capacity to leave a mark on Regirock (otherwise, there is very little reason to phaze it), and after being hit by a strong attack,Regirock will often be forced to switch out blindly against a fresh attacker that could cripple or even KO it before it can get off a U-turn. Clear Smog is another option to achieve the same goal of blocking stat boosting. Finally, Metal Burst is an option that synergizes well with Regirock's low Speed, but Regirock's comparatively low HP by Balanced Hackmons standards greatly lowers the move's effectiveness.
Alternatively, one could attempt a Sand Stream set with Leftovers or Safety Goggles to provide a similar buff to Special Defense as Assault Vest does. Sand Stream also holds the allure of discouraging Shedinja from switching in. By sacrificing Regenerator, however, Regirock is forced to spend valuable time recovering, which sacrifices much of the niche that it otherwise holds. Between extra chip damage, a free item slot, and the ability to use status moves, Sand Stream Regirock may appear to be a strong option, but it unfortunately faces strong competition from Flash Fire Steel-types, which play a similar role, unless you plan to use Regirock as a weather setter for a team built around sand. If this is not the case, however, RegenVest is the superior choice, as it is what Regirock excels at.
Checks and Counters
==========
**Poison Heal Giratina**: Once its Toxic Orb is activated, Poison Heal Giratina is impervious to anything Regirock can do. It can easily switch in and status or otherwise cripple Regirock, forcing Regirock to U-turn out on the switch or hard switch out once Giratina is in. However, if Giratina has not yet activated its Toxic Orb, Regirock can threaten it with a Sacred Fire, Nuzzle, or Knock Off.
**Lum Berry Sturdy Shedinja**: If Regirock lacks Sand Stream, Knock Off, and Infestation, Shedinja can switch in with absolute impunity and Recycle its Lum Berry if statused. From this position, Shedinja can threaten Regirock with Endeavor or pivot out with an even slower switching move than Regirock's U-turn, stealing momentum.
**Flash Fire Steel-types**: Flash Fire Steel-types can easily switch in on Regirock, tanking its moves with ease and notably being immune to its Sacred Fire. Regirock can use Knock Off against them, but that is unfortunately the extent of its ability. Meanwhile, they can threaten Regirock back with status or attempt to wear it down with STAB Steel-type attacks.
**Protean Mega Mewtwo**: While they struggle to switch in safely, Protean Mega Mewtwo X and Y can both threaten Regirock with STAB Thousand Arrows and Earth Plate Judgment, respectively. Due to Regirock's lack of immediate, reliable recovery, it is often forced to switch out of these attacks to avoid being KOed (Mega Mewtwo X's Thousand Arrows is a clean 2HKO, whereas Mega Mewtwo Y has a chance to OHKO with Earth Plate Judgment). To add insult to injury, once Mewtwo changes its type to Ground with Protean, it cannot be affected by Nuzzle and it resists Diamond Storm.
**Mega Diancie**: Mega Diancie can easily switch in on much of Regirock's moveset thanks to its typing, and once it does, it can threaten Regirock with a powerful Pixilate-boosted Boomburst. However, Mega Diancie is relatively vulnerable to Regirock's Diamond Storm and Sacred Fire.
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