Litho's Armory/True Eye of Cthulhu

Not to be confused with the True Eye of Cthulhu, a minion of the Moon Lord.

The True Eye of Cthulhu is a post-Moon Lord that is an upgrade to the  and The Eye of Cthulhu. Like the Eye of Cthulhu, is one of the few yoyos that can stay in the air indefinitely, and has the added bonus of shooting homing Phantasmal Eyes at nearby enemies which bounce off of tiles and explode upon contact with an enemy.