Pokémon ex rule: When your Pokémon ex is Knocked Out, your opponent takes 2 Prize cards.
Mega Evolution rule
When 1 of your Pokémon becomes a Mega Evolution Pokémon, your turn ends.
Sonic Ace
Damage: 120
Discard 2 Energy attached to this Pokémon. This attack does 120 damage to 1 of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)