... 12 mana. Twelve mana. Twelve mana. This doesn't even win the game the turn AFTER it comes into play. I think you may have overcosted it by about 5.

Twelve. Yeesh. At least make it a 12/12 to match.

One could argue that since this has no "if put into grave, shuffle into deck" clause in it, the cost doesn't actually matter as you would just reanimate it 🙃

@Vitenka, Keep in mind your fatesealing for 20, meaning you can just screw your opponent out of all their cards forever

Yes; but this costs twelve. You're allowed flat out "Win the game" for ten. And practical "I win" buttons at 8 or 9.

"Opponents no longer draw cards" would be irritating as heck; and almost a win button. So sure, that costs 7 or 8. (Though it's the kind of effect wizards mostly avoids; because it's not any fun.)

But twelve? Twelve?!

Any relation to Uma Thurman ?

Fateseal 20 seems miserable to resolve. I guess you just leave all the lands on top. I'm with Vitenka, make it a 12/12 that fateseals 12

This reminds me of Iona, Shield of Emeria in terms of shutdown potential. It's worse, because if your opponent is playing multiple colors, they can at least deal with Iona.

This can't be targeted or destroyed, and you have no hope of drawing and answer to it once it gets to attack. You have to draw untargeted exile, tuck, or sacrifice the turn after it resolves (hahaha as though it often would be hardcast), or you have to have the answer in your hand already. I think you've made it a bit too hard to answer.