Ooooo I love discussing Garchomps. Let's go with a Mega Chomp Set
Garchomp-Mega @ Garchompite
Ability: Sand Force
EVs: 180 HP / 252 Atk / 76 SpDef
Adamant Nature
- Brick Break
- Dragon Tail
- Poison Jab
- Earthquake
Phazer /EQ Killer of Physical Tanks Late-Game Cleaner MegaChomp
For me, this is a weird set. While developing a sand team, I knew I wanted to use Mega Garchomp, but I wanted to make a set that could not only throw my opponents off, but also be viable enough to be able withstand some of the most powerful ice type attackers currently in the metagame. Brick Break and Fire Fang / Blast was a tough decision. I ultimately went with Brick Break, mostly due to the ability to be able to hurt some of MegaChomp's most common checks
. In conjunction we have Poison Jab. Fairy Type checks such as Clefable hate hate hate this move as well as Earthquake. Dragon Tail is the phazing part. I added this because the non-fairy-type-set-uppers are giving decent damage as well as being switched into something else. Earthquake is the main damage stab. I never always spam Dragon Tail, I use all my other moves when I can, but when I have the opportunity to phaze, I use Dragon Tail. Killing is a job for EQ, Brick Break, and Poison Jab
A Few Calcs
252+ Atk Sand Force Mega Garchomp Earthquake vs. 252 HP / 252+ Def Clefable in Sand: 250-295 (63.4 - 74.8%) -- guaranteed 2HKO after sandstorm damage and Leftovers recovery
Assuming Sand is up for all these Calcs since I use (and you should use) a sand team for this set. In sand Physically Defensive Clefable is 2HKO'd meanwhile it only has a 77% chance to 2HKO with Moonblast
252+ Atk Sand Force Mega Garchomp Earthquake vs. 252 HP / 252+ Def Hippowdon in Sand: 184-217 (43.8 - 51.6%) -- guaranteed 3HKO after Leftovers recovery
Hippowdon's EQ is a guaranteed 4HKO. This is a guaranteed 3HKO after lefties recovery, but if we take Slack Off into account
it can take longer.
252+ Atk Sand Force Mega Garchomp Earthquake vs. 92 HP / 0 Def Azumarill in Sand: 343-405 (94.2 - 111.2%) -- 68.8% chance to OHKO
+6 252+ Atk Huge Power Azumarill Aqua Jet vs. 180 HP / 0 Def Mega Garchomp: 282-333 (70.1 - 82.8%) -- guaranteed 2HKO
252+ Atk Huge Power Azumarill Play Rough vs. 180 HP / 0 Def Mega Garchomp: 318-374 (79.1 - 93%) -- guaranteed 2HKO
I know I've been using EQ for all the offensive calcs, but right now I'm trying to show MegaGarchomp's Bulk. Belly Drum Azumaril is outsped by MegaChomp, can't Play Rough on the first turn because it doesn't have the bulk, and +6 Aqua Jet doesn't kill either.
252+ Atk Mega Garchomp Poison Jab vs. 252 HP / 252+ Def Chesnaught: 146-174 (38.4 - 45.7%) -- guaranteed 3HKO after sandstorm damage and Leftovers recovery
0 Atk Chesnaught Wood Hammer vs. 180 HP / 0 Def Mega Garchomp: 121-144 (30 - 35.8%) -- 37.3% chance to 3HKO
Chesnaught- one of OU's tanks is 3HKO'd by this beast when it's most powerful move can't touch it
252+ Atk Mega Garchomp Brick Break vs. 12 HP / 0 Def Heatran: 210-248 (64.4 - 76%) -- guaranteed 2HKO
Offensive Air Balloon Heatran is 2HKO'd by Brick Break, so you really don't need EQ for it.
I haven't used this set for a long time, only about 2 weeks on my sand team. Is it perfect? No, far from it. It's a good phazer, mostly since most people don't expect it coming. However, this set's draw for me is it's easy ability to take on some of its checks
and counters. However, don't use it on a non sand team.
anticipating "this set sucks" comments because of how weird this set is.

Garchomp-Mega @ Garchompite
Ability: Sand Force
EVs: 180 HP / 252 Atk / 76 SpDef
Adamant Nature
- Brick Break
- Dragon Tail
- Poison Jab
- Earthquake
Phazer /
For me, this is a weird set. While developing a sand team, I knew I wanted to use Mega Garchomp, but I wanted to make a set that could not only throw my opponents off, but also be viable enough to be able withstand some of the most powerful ice type attackers currently in the metagame. Brick Break and Fire Fang / Blast was a tough decision. I ultimately went with Brick Break, mostly due to the ability to be able to hurt some of MegaChomp's most common checks

A Few Calcs
252+ Atk Sand Force Mega Garchomp Earthquake vs. 252 HP / 252+ Def Clefable in Sand: 250-295 (63.4 - 74.8%) -- guaranteed 2HKO after sandstorm damage and Leftovers recovery
Assuming Sand is up for all these Calcs since I use (and you should use) a sand team for this set. In sand Physically Defensive Clefable is 2HKO'd meanwhile it only has a 77% chance to 2HKO with Moonblast
252+ Atk Sand Force Mega Garchomp Earthquake vs. 252 HP / 252+ Def Hippowdon in Sand: 184-217 (43.8 - 51.6%) -- guaranteed 3HKO after Leftovers recovery
Hippowdon's EQ is a guaranteed 4HKO. This is a guaranteed 3HKO after lefties recovery, but if we take Slack Off into account

252+ Atk Sand Force Mega Garchomp Earthquake vs. 92 HP / 0 Def Azumarill in Sand: 343-405 (94.2 - 111.2%) -- 68.8% chance to OHKO
+6 252+ Atk Huge Power Azumarill Aqua Jet vs. 180 HP / 0 Def Mega Garchomp: 282-333 (70.1 - 82.8%) -- guaranteed 2HKO
252+ Atk Huge Power Azumarill Play Rough vs. 180 HP / 0 Def Mega Garchomp: 318-374 (79.1 - 93%) -- guaranteed 2HKO
I know I've been using EQ for all the offensive calcs, but right now I'm trying to show MegaGarchomp's Bulk. Belly Drum Azumaril is outsped by MegaChomp, can't Play Rough on the first turn because it doesn't have the bulk, and +6 Aqua Jet doesn't kill either.
252+ Atk Mega Garchomp Poison Jab vs. 252 HP / 252+ Def Chesnaught: 146-174 (38.4 - 45.7%) -- guaranteed 3HKO after sandstorm damage and Leftovers recovery
0 Atk Chesnaught Wood Hammer vs. 180 HP / 0 Def Mega Garchomp: 121-144 (30 - 35.8%) -- 37.3% chance to 3HKO
Chesnaught- one of OU's tanks is 3HKO'd by this beast when it's most powerful move can't touch it
252+ Atk Mega Garchomp Brick Break vs. 12 HP / 0 Def Heatran: 210-248 (64.4 - 76%) -- guaranteed 2HKO
Offensive Air Balloon Heatran is 2HKO'd by Brick Break, so you really don't need EQ for it.
I haven't used this set for a long time, only about 2 weeks on my sand team. Is it perfect? No, far from it. It's a good phazer, mostly since most people don't expect it coming. However, this set's draw for me is it's easy ability to take on some of its checks

anticipating "this set sucks" comments because of how weird this set is.
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