Radiant Power Orb

The is an  Orb unlockable at. It can be upgraded into a Mana Flux Power Orb.

Using its ability does not remove/use up the item, nor does it need to be picked up; the ability spawns a "new" orb.

Trivia
As of 3/28/21, you can place radiant power orbs, as well as manaflux, overflux, and plasmaflux orbs on your island by shift clicking with it on a chest, then breaking the chest and placing what you wish.