Toxicroak

Psychic 90 HP Stage: Stage1 Rare

Revenge

20+

If any of your Pokémon were Knocked Out by damage from an opponent's attack during his or her last turn, this attack does 70 more damage.

Ps N N

Poison Jab

The Defending Pokémon is now Poisoned.

The croaking that Toxicroak produces before a battle is for churning the poison it has stored in its poison sac.