The Nebular sponsor attached to Ysalte who is explicitly absent from her shell during the summoned boss battle.
Ysalte's description identifies Pontifex Shine of the Nebular Balance as her sponsor. Unlike many sponsored divine appearances, Shine is not currently inhabiting or controlling the deity's shell.
That absence leaves Ysalte speaking and reacting as her normal self, which the system warns is especially dangerous.
A remote alien pontiff sigil hovering outside the outline of an autonomous dwarf goddess.
The sponsorship confirms Nebular involvement while ruling out direct sponsor control of Ysalte's actions.