Cloyster (Sun & Moon SUM 34)

Cloyster — 120 HP — [W]
Stage 1 — Evolves from Shellder

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

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

weakness: [G]×2
resistance:
retreat: 3

Illus. Yoshinobu Saito
Sun & Moon — 34/149 — Rare

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