Tablet Fragment

Not to be confused with the Solar Tablet Fragment.

The Tablet Fragment is a pet item which has a 25% chance to drop from the Lunatic Cultist in Master mode. It summons a Phantasm Dragon pet that will follow the player around. It resembles the phantasm dragon spawned during the boss fight, aside from having fewer legs.

Trivia

 * Its tooltip, "It keeps looking at the Moon", may be a reference to the final boss, Moon Lord.
 * Strangely the item appears to be a fragment of the Solar Tablet instead of the Mysterious Tablet.