Talk:Celestial Sigil/@comment-26814503-20150724012702/@comment-3157150-20150724013350

Just like any other boss-summoning item? Hold it and use it. You can't use it with any other bosses alive, nor with any of the Celestial Pillars present. You also can't use it with any of the lesser Cultists (The archers and worshipers) on-screen.