pokémon - trading card game: mega evolution booster bundle – MidWestPoke Mega Greninja ex gathers other powerful Mega Evolution Pokémon ex Pokemon Mega Evolution Ascended Heroes,

You get to draw an extra card, re-spend all your mana, and get an extra combat stepnot to mention extra upkeep/end step triggers, planeswalker activations, and so on

I have a more detailed explanation of these in the introduction of my Graveyard Overdrive blog

This is incredibly potent and makes Grist, the Hunger Tide an immediate lightning rod once it hit's, so make sure you're either ready to defend it or content with one activation

Depending on what is on your board at the time, this can close out an entire game, dealing damage to an opponent by combat to then kill them with Vito, Thorn Of The Dusk Rose's main effect