The Rule of the Vault: The smallest details dictate a cards true value
Unless you can pick it off with an exile spell, it's trivial to return it to hand essentially forever for the Zombies player, and it keeps the absolute worst of the worst coming back to shamble on for more brains
engine hits full speed, the six-cost Enel #OP15-118 character cards take over, becoming 10,000-power attackers that cannot be removed from the field by opponent effects when you have six or fewer DON
Bonus points for the card flat-out losing to every other card representing opponents that Gerrard defeated or overcame in the novels
You'd play a turn four 3/3, your opponent would play a turn four 3/3
Traditional Chinese Foil M15 planeswalkers might be missing their loyalty counter number or Italian 5th Edition Breeding Pits have no casting cost, etc