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)
Aggron-EX (Holofoil)
Sharpedo-EX (Holofoil)
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M Aggron-EX (xy5-154 Holofoil) is a Metal-type MEGA Pokémon-EX from the Primal Clash expansion. Its Megaton Slam attack costs four energy and can deal a large bonus on a successful coin flip but risks hitting your own Benched Pokémon on tails. It follows the Mega Evolution rule that ends your turn when it evolves and the Pokémon-EX rule that yields two Prize cards if it is Knocked Out.
Catalog pricing data as of 22 Apr 2026, 22:23