While not busted like some past Teferis, the Knight-pumping emblems work well with the front side of the card, while card advantage and removal are exactly what you want to see on a planeswalker
As a spell or ability tries to resolve, if all its targets are illegal, that spell or ability doesn't resolve and none of its effects happen, including effects unrelated to the target
Attack 2 : Easy Flip a coin
Note: It also goes infinite with, like, most cards here
Ragnarok, Divine Deliverance Legendary Creature Beast Avatar Vigilance, menace, trample, reach, haste When Ragnarok dies, destroy target permanent and return target nonlegendary permanent card from your graveyard to the battlefield
Vampires in MTG are really powerful mechanically