Summary
Astromancer is one of the Astral Orrery bosses and sits inside the floating Scholar installation high above Tenebrous Isle.
How the fight goes
The fight reads like a late-game scholarly encounter: keep your position stable, avoid overcommitting, and let the arena tell you when it is safe to move in.
Attack patterns
Expect magical pressure, arena control, and changing safe lanes rather than a simple brawl.
Spoils of the fight
Use the page as a reference for the Astral Orrery route and any rewards or unlocks attached to the encounter.