
Cosmic Eclipse · #104
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It slithers toward people. Then, without warning, it triggers the explosion of its own head. It's apparently one kind of Ultra Beast.
Abilities, attacks, weakness & resistance
Put 4 damage counters on your opponent's Pokémon in any way you like. If your opponent has exactly 3 Prize cards remaining, put 12 damage counters on them instead.
Other cards from Cosmic Eclipse

Arceus & Dialga & Palkia-GX (Holofoil)

Togepi & Cleffa & Igglybuff-GX (Holofoil)

Draw Energy (Holofoil)

Tag Call (Holofoil)

Power Plant (Holofoil)

Martial Arts Dojo (Holofoil)

Lillie's Poké Doll (Holofoil)

Lana's Fishing Rod (Holofoil)

Island Challenge Amulet (Holofoil)

Great Catcher (Holofoil)

Giant Hearth (Holofoil)

Silvally-GX (Holofoil)
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Blacephalon (sm12-104 Reverse Holofoil) is a Psychic-type Basic Ultra Beast from the Cosmic Eclipse set. Its Fireworks Bomb attack places damage counters freely across the opponent’s Pokémon and deals increased damage when the opponent has exactly three Prize cards remaining. The card has standard weaknesses, resistances, and a two-colorless retreat cost, making it function like a typical attacker/supporter in deck play.
Catalog pricing data as of 19 Apr 2026, 06:48