Sothera, the Supervoid Sothera is just an updated Grave Pact that had a baby with Pestilence: a four-mana enchantment that gets rid of an opposing creature when one of yours dies and that stops sticking around once there are no creatures in play
With 151 monsters to make cards out of, all with distinct elemental types plus many items that could be employed as support cards, it would have been foolish of Nintendo and Game Freak not to cobble together a Trading Card Game out of it all
Fraud attempts will be reported
And if they end up NOT having the instant speed removal, then you can attack, deal some damage, and if it comes back to your turn, then you can Mutate again to get more triggers
That's Battle Academy all over
Strengths and Considerations The main strength of Finale of Devastation is flexibility across the whole game