mega evolution booster box 36 Pokémon Evolution-Chaos Rising Display (36 Packs) in the Pokémon TCG Pokemon Mega: Chaos Rising Booster

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

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

Tap him to do a Tim damage

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

Beyond these cards just listed, there are even more on the SNKRDUNK App which have connections to Pokmon Legends: Z-A