How powerful and impactful is this card
These don't have any variation from the above listed Common through Mythic scheme but are rarer cards to acquire, especially the Masterpiece cards
Token-based decks are likely to wipe all creatures with mana value 4 or higher, sparing their own board states while wiping out the opponents' largest creatures
And if its later and you want to trade the attacking 3/3 for a nasty creature, knowing that the Champion is likely to be blocked and die, well, that was using it just like a four-mana sorcery that reads, Put a creature from your hand onto the battlefield. And dont forget the potential reusability of the Champions exert later, as well as Greens acceleration getting the Champion out and swinging earlier than its 4th turn sell-by date the other colors 4-drops would normally have
Ongoing schemes are a little different
Meanwhile, Teval can return lands from the graveyard and gives you a 2/2 Zombie token any time a card leaves the graveyard