pokemon volcanion card gx - Volcanion-EX (115/114) - XY Steam Siege Attack 1 Pokemon Volcanion ex - 031/159

During your opponents next turn, the Defending Pokemons attacks cost [C][C] more

The regeneration ability could use a little cleaning--is the Pay 3 life part of the cost to regenerate, or is it part of the token creation triggered ability

Punchout counters

Enchantment Card Advantage (CTRL to add secondary) Interaction Interaction (CTRL to add secondary) Land Land (CTRL to add secondary) Pinger Chandra, Torch of Defiance +1: Exile the top card of your library

+1/+1 counter decks are a natural archetype to add this to, but its also fantastic in superfriends decks and even decks using charge counters or -1/-1 counters