It's four power of tokens for four mana
This doesnt shuffle in, and I think is better in a world of spells recursion
2 Emet-Selch, Unsundered/Hades, Sorcerer Of Eld From FFXIV Fill Your Graveyard, Then Use It As Your Second Hand Though Emet-Selch won't completely eradicate the board like a Rejoining eradicates a world, he can be dangerous if allowed to go unchecked for long enough
If their strength is lower than their willpower, they take damage and damage counters equal to the strength value are placed on the card
While it's tempting to add high mana creatures to the deck, you have to remember that since the draw is random, you may not be able to cast any creatures until late in the game (or at all, depending on your opponent's deck!)