Caiphon

Caiphon is a purple star in the sign of the Crone, sometimes called the Crone’s Hump because of where it appears on her back. It is believed to be tied to prophecy and is often called on by Star-Pact Warlocks, as it can grant prescience and insight in battle.

Caiphon also seems to be a Far Realm entity of some power, often attempting to manipulate and control champions, setting them against each other in order to find the strongest amongst them.

Caiphon

Seven Kingdoms: Seowyn's Crossing aethan