Muk & Alolan Muk GX

Severe Poison — Your opponent’s Active Pokémon is now Poisoned. Put 8 damage counters instead of 1 on that Pokémon between turns.

Poison Absorption · 120 — If your opponent’s Active Pokémon is Poisoned, heal 100 damage from this Pokémon.

Nasty Goo Mix GX — Your opponent’s Active Pokémon is now Paralyzed and Poisoned. If this Pokémon has at least 4 extra Energy attached to it (in addition to this attack’s cost), put 15 damage counters instead of 1 on that Pokémon between turns. (You can’t use more than 1 GX attack in a game.)