Poseidon, Earthshaker

Indestructible, Islandwalk

When Poseidon, Earthshaker enters the battlefield, search your library or graveyard for Poseidon's Children, put it in your hand, and shuffle your library. If you searched your graveyard, shuffle it back into your library.

Landfall - When a land enters the battlefield, Poseidon, Earthshaker deals one damage for each blue creature in every player's graveyard to any target.

He cursed Odysseus for blinding his son Polyphemus.