You make them pay a steep cost to get rid of it, and if they dont youre swinging life totals by 18 every attack
You get to switch any of your Basic Pokemon with a Basic Pokemon from your Discard Pile to swoosh a new threat into play
Its hard to go wrong with a zero-mana ramp piece in your deck
Katsumasa, the Animator This was one of the first cards I yanked from my Kotori, Pilot Prodigy precon, and even though people find ways to use it in decks like Mu Yanling, Wind Rider, Katsumasa, the Animator feels like too little for the cost and the slowness
It destroys all Creatures, including Excava, but it doesn't get Quintorus and makes a bunch of fresh blockers for him, all while adding more fuel to your Graveyard
Thus, a four-color Commander deck