Pokemon Power · Transparency
Whenever an attack does anything to Haunter, flip a coin. If heads, prevent all effects of that attack, including damage, done to Haunter. This power stops working while Haunter is Asleep.

HP 50 · Psychic
Pokémon — Stage 1
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Whenever an attack does anything to Haunter, flip a coin. If heads, prevent all effects of that attack, including damage, done to Haunter. This power stops working while Haunter is Asleep.
Cost: Psychic, Colorless
The Defending Pokémon is now Asleep.