I'm really loving magic guard + life orb on all sorts of mons and I think it's highly underated considering I barely ever see it. It's also one of the best ways to maximize volt tackle's potential and kill waters who are so hard to realiably hit hard since bolt beak ban.
Calyrex-Ice @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant Nature
- Glacial Lance
- Volt Tackle
- Thousand Waves
- Slack Off
Calyrex is an amazing user of magic guard and uses the ability both offensively and defensively. This set's raw power, amazing coverage and capacity to improof itself through trapping makes it extremly hard to switch into and works ridiculously well when combined with para spreaders such as cramorant that compensate for calyrex's low speed. Glacial Lance + Life orb 2hkos nearly everything that doesn't resist it and volt tackle and thousand waves hit basicaly everything that resist glacial lance for super effective damage. Fur coat is one of the only ways to safely switch into calyrex. Calyrex's best counter is probably itself, which is why you use thousand waves to trap chansey (and volt tackle + slack off to pp stall). Unforltunately, this comes with a 41% chance your own calyrex will be paralyzed by chansey's 5 volt tackles, but the chance that will lead to a kill are very slim. Thousand waves also traps regenerator users stopping the hard switch and often leading to a kill if the opposing mon is paralyzed.
On top of that, Calyrex has a fairly large defensive niche that pairs well with cramorant with it's amazing defensive stats and resistance to ice without being weak to fighting, ground, water or electric. Calyrex's defensive properties are further boosted by the fact it's immune to hazards, binding damage and toxic. You will want to prepare for knock off and strength sap (especialy when combined with trapping) and play safely as long as they could still be revealed as they are the best ways to shut down this set.
A similar kyurem-b set can be used if you don't want to pack paralyze or would rather run sticky web. However, it doesn't pack the same defensive properties and doesn't improof itself (probably does with strength sap over slack off but it should be tested).
I have played with and faced multiple of those sets, but that calyrex set might be the strongest thus far. They have a very niche role and can easily get shut down by status (scald, will o wisp), core enforcer and fur coat mons. Knock off is also a pain as the power creep is real and most of the times even with life orb you fail to 2 hit KO or even 1 hit KO with +1 or even +2 vs FC mons.
Tyranitar @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant Nature
- Head Smash/wicked blow
- High Jump Kick
- Shift Gear
- Glacial Lance
+1 252+ Atk Life Orb Tyranitar Wicked Blow vs. 252 HP / 252+ Def Giratina on a critical hit: 549-647 (108.9 - 128.3%) -- guaranteed OHKO
+1 252+ Atk Life Orb Tyranitar High Jump Kick vs. 252 HP / 252 Def Zamazenta-Crowned: 377-445 (97.1 - 114.6%) -- 81.3% chance to OHKO
Zekrom @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Jolly Nature
- Volt Tackle
- Flare Blitz/high jump kick/thundurus kick
- Dragon Darts/hazzard/taunt
- Strength Sap/recover
252 Atk Life Orb Zekrom Volt Tackle vs. 252 HP / 252+ Def Ho-Oh: 439-517 (105.5 - 124.2%) -- guaranteed OHKO
252 Atk Life Orb Zekrom Volt Tackle vs. 252 HP / 252+ Def Kyogre: 439-517 (108.6 - 127.9%) -- guaranteed OHKO
252 Atk Life Orb Zekrom Volt Tackle vs. 252 HP / 252 Def Xerneas: 231-274 (50.6 - 60%) -- guaranteed 2HKO 2 hit KO on rash xern.
Terrakion @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant/jolly Nature
- Head Smash/taunt/recover
- High Jump Kick
- Dragon Dance/taunt/recover/flip turn
- Glacial Lance
Fails to KO most mons, even after +1 (except non FC zama and melmetal).
Groudon @ Life Orb (not fully tested)
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant/jolly Nature
- Thousand Arrows/thousand waves/Precipice miss
- Glacial Lance
- Flare Blitz/volt tackle
- Shift Gear/recover
It hurts me to see no good and viable groudon sets, even 1/2 year after DLC dropped. With its 150 base attack and +1 it is usually just shy of OKing the bulky "meta" mons.
+1 252+ Atk Life Orb Groudon Glacial Lance vs. 252 HP / 252+ Def Giratina: 426-504 (84.5 - 100%) -- 6.3% chance to OHKO
+1 252+ Atk Life Orb Groudon Thousand Arrows vs. 252 HP / 252+ Def Zamazenta-Crowned: 390-460 (100.5 - 118.5%) -- guaranteed OHKO
252 Atk Life Orb Groudon Volt Tackle vs. 252 HP / 252 Def Ho-Oh: 322-380 (77.4 - 91.3%) -- guaranteed 2HKO
252 Atk Life Orb Groudon Volt Tackle vs. 252 HP / 252 Def Tapu Fini: 273-322 (79.3 - 93.6%)
252 Atk Life Orb Groudon Glacial Lance vs. 252 HP / 252+ Def Zygarde-Complete: 520-614 (81.7 - 96.5%) -- guaranteed 2HKO
Buzzwole @ Rocky Helmet/leftover/hdb (very good fur coat mon vs these MG + life orb users and in general)
Ability: Fur Coat
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD
Relaxed Nature
IVs: 0 Spe
- Roost
- Drain Punch/knock off
- Spectral Thief/knock off/filler
- U-turn
Then there are also special attackers (heatran/dialga), but shallow movepool where you dont hit a broad spectrum and lack of pps.
Heatran @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Modest/timid Nature
IVs: 0 Atk
- Steel Beam
- Mind Blown
- Strength Sap/recover
- Quiver Dance/filler
Very good typing, but its 2 moves can easily get completely walled by certain mons like reshiram, palkia, zekrom etc etc and even timid +1 speed is only 417.
Lastly there is ofc Pheromosa, but I feel most people know about it and feel it is too much of a glass cannon: (something to note: base 90 mons can outspeed with scarf + speed nature and also rash/mild
xern/yveltal).
Pheromosa @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Naive Nature
- Mind Blown
- Glacial Lance
- High Jump Kick
- U-turn/filler
All this being said, they can pair very well with tinted lens Kartana and teravolt Kyurem-B with respectable attack that can pressure and beat fur coat mons:
Kartana @ Choice Band
Ability: Tinted Lens
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant/jolly Nature
- Sunsteel Strike
- Power Whip/glacial lance
- U-turn
- Fishious Rend/filler
Kyurem-B @ Choice Band / Life orb
Ability: Teravolt/Mold breaker
EVS: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe
Adamant/jolly Nature
- Glacial Lance
- Dragon darts/Bolt strike/filler
- U-turn/flip turn
- Precipice miss/thousand waves/filler