Clearing out an entire board is no joke, and it's hard for anyone to avoid if it comes in swinging straight away
Unsubstantiate is best suited in decks that can close the game early, but I think it will be an effective card in those decks
This is made achievable by Zedruu's ability to bestow a permanent onto an opponent at the cost of three mana
It might be due to the very mixed colors the decks represent (in the past they have been balanced in some way to represent all colors equally)
In the Pokmon TCG , Mewtwo has two moves: the attack Psyburn, which deals 110 damage, and the strategic Life Sucker, which allows it to steal 20 HP from an opponent's Pokmon
You can still cast the spell without being able to pay this cost, but itll fizzle