Cloyster

Its hard shell cannot be shattered—not even by a bomb. The contents of the shell remain unknown.

Headlock (30+): Flip a coin. If heads, this attack does 30 more damage. If tails, your opponent’s Active Pokémon is now Paralyzed.

Guard Press (80): During your opponent’s next turn, this Pokémon takes 20 less damage from attacks (after applying Weakness and Resistance).