Summon an evil demon.
Summons an Eye Demon. Certain locations will react if this spell is used.
Using it while on a ritual circle in a secret room will summon the Demon NPC instead
| Sygil Code |
|---|
 |  |  | |
| Moon Symbol | Eye Symbol | Goblet Symbol | Moon Symbol |
Sources and community notes
- The achievements guide gives the sigils as Moon, Eye, Chalice, Moon (this page shows them as an image).
- The guide lists the Demon NPC as appearing through summoning.
- The Spells guide gives the sigil order as Moon, Eye, Chalice, Moon, and describes the effect as: summons a one-eyed demon.
- The sigil order above was read from the diagram images in the Spells guide. Four of them (the Grand Jump, Summon Food, Summon Demon and the Spell of Return) match sequences given independently in the achievements guide and a forum thread, which is why the readings are given here rather than left as images.
- The Spells guide says the summoned demon attacks you immediately.
- The Secret Rooms guide says summoning sigils on secret-room floors have a special interaction with this spell if you stand on one and cast; a commenter describes summoning "a very philosophical" bird-like NPC that way.
Community-sourced (added October 2026, not yet verified in-game). Sources: Steam guide: Achievements guide (updated Jan 11, 2025); Steam guide: Spells by Groth; Steam guide: Secret Rooms and You by Slunky.