i wrote zapdos a millisecond after airfare fml
I'll take garchomp
Garchomp @ Rocky Helmet
Ability: Rough Skin
EVs: 224 HP / 228 Def / 56 Spe
Impish Nature
- Stealth Rock
- Earthquake
- Endure
- Dragon Tail
(Endure makes it an even harder check, the last slot is completely filler)
Tank Chomp is definitely not a counter, but it's a damn good
check. Zamazenta-C is forced to run Rusted Shield, which means one of its main weaknesses is that every miniscule percentage of passive damage is going to stick, even a puny 3% damage from Stealth Rock.
Endure Tank Chomp takes this concept to the extreme, with the infamous combination of Rocky Helmet and Rough Skin dealing free 23% damage on the enemy's contact.
Zamazenta-C will probably be played with Adamant since it desperately needs any power it can get, so I tailored the EV spread to withstand Adamant Zamazenta-C. Of course if you run into Jolly, it just gets easier.
252+ Atk Zamazenta-Crowned Close Combat vs. 224 HP / 228+ Def Garchomp: 163-193 (39.4 - 46.7%) -- guaranteed 3HKO after Stealth Rock
This means that you can always switch in, either taking no damage from Wild Charge or Howl, or tanking a STAB attack with health to spare to tank the next one dealing 23% damage in the process. Endure ensures that, barring hax, Zamazenta will basically NEVER 2HKO Garchomp no matter what it does on the switch, which means that it will have to eat 69% damage just to remove Garchomp. Of course, Garchomp comes equipped with the third strongest Earthquake in the tier, which despite Zamazenta-C's astounding defense and Dauntless Shield, still deals reliable damage and ensures that Garchomp will always win the 1v1 interaction.
0 Atk Garchomp Earthquake vs. +1 0 HP / 0 Def Zamazenta-Crowned: 198-234 (60.9 - 72%) -- guaranteed 2HKO
Taking this into account, I think it's safe to say that Tank Chomp is going to be a major annoyance for Zamazenta-C and his other physical attacking teammates and by virtue of its Ground typing, it definitely deserves a mention as an annoying check.