Description, catalog fields, rules text, and how it plays—in one place.
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Mega Evolution rule: When 1 of your Pokémon becomes a Mega Evolution Pokémon, your turn ends. Pokémon-EX rule: When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.
Abilities, attacks, weakness & resistance
You may flip a coin. If heads, this attack does 120 more damage. If tails, this attack does 20 damage to each of your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Other cards from Primal Clash
Weakness Policy (Holofoil)
Switch (Holofoil)
Enhanced Hammer (Holofoil)
Dive Ball (Holofoil)
Teammates (Holofoil)
Professor Birch's Observations (Holofoil)
Maxie's Hidden Ball Trick (Holofoil)
Archie's Ace in the Hole (Holofoil)
M Gardevoir-EX (Holofoil)
Gardevoir-EX (Holofoil)
M Aggron-EX (Holofoil)
Aggron-EX (Holofoil)
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M Aggron-EX (xy5-94-Holofoil) is a Metal-type MEGA Pokémon-EX from the Primal Clash set with a printed number of 94/160. Its attack Megaton Slam deals 120 base damage and may do 120 more on a heads, but on tails it deals 20 damage to each of your Benched Pokémon instead. The card follows Pokémon-EX and Mega Evolution rules, meaning it gives two Prize cards if knocked out and ends your turn when it evolves into play.
Catalog pricing data as of 18 Apr 2026, 17:37