mega evolution booster box 36 Pokémon Evolution-Chaos Rising Display (36 Packs) Shadows deepen and nightmares become reality in the Pokémon TCG Pokémon - Mega Evolution 2

Tap him to do a Tim damage

Once per turn: You can make this card's ATK become double its original ATK, until your next Standby Phase

(As will I

This is a completely new system from PTCGO so let me explain what each different currency does

Firkraag's first ability suggests a dragon deck similar toThe Ur-DragonThe Ur-Dragon or Miirym, Sentinel WyrmMiirym, Sentinel Wyrm from the same set, but I think it has more in common with goad commanders like Kitt Kanto, Mayhem DivaKitt Kanto, Mayhem Diva and Marisi, Breaker of the CoilMarisi, Breaker of the Coil, though I think it's much less oppressive than the latter

Neoform is interesting with both, for example