Paradox Kraken

Creature — Kraken7/7

When this card is put into your graveyard from anywhere, conjure a card named Kraken Hatchling into your hand. {1}{U}: Return this card from your graveyard to the battlefield. Activate only if there are more cards in your graveyard than your library and only as a sorcery.

Not legal in Commander

View Paradox Kraken on Scryfall