Sigilyph (Shiny Star V 074/190)
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Ability Counterattack

If this Pokémon is in the Active Spot and is damaged by an opponent's attack (even if it is Knocked Out), put 3 damage counters on the Attacking Pokémon.

Psychic Colorless
Psychic Assault
30+

This attack does 10 more damage for each damage counter on your opponent's Active Pokémon.