Yellowfinger Heysel is a dark spirit who invades in both the Crucifixion Woods and in the Farron Keep swamp. Members of the Rosaria's Fingers covenant may also summon her as a white phantom to assist.
Yellowfinger Heysel, a Finger of Rosaria and xanthous scholar is a researcher of lost sorceries. According to Ringfinger Leonhard, Heysel had romantic ideals about the covenant that Rosaria's Fingers shared camaraderie.
- As an invading red phantom. She will invade near the Great Crab guarding the Great Swamp Pyromancy Tome.
- As an invading red phantom. In an area with several Basilisks, near the cave where the Antiquated Set is found.
- As a summonable white phantom. Her summon sign is next to the tower near the Keep Ruins bonfire. Her sign will not appear unless you have defeated her once, offered a Pale Tongue to Rosaria and extinguished the three flames.
- Has the Obscuring Ring, limiting your ability to see her from a distance.
- Is part of the covenant Rosaria's Fingers.
- After summoning her, you will receive the Proper Bow gesture.
- If defeated twice as an invader, a non-hostile Man-grub will appear next to the bonfire in Rosaria's Bedchamber. Upon killing it, it drops Heysel Pick and Xanthous Crown.
- While invading in the Crucifixion Woods she will be hostile to not only the player and any summons they may have, but also to any invading Watchdogs of Farron joining the fray. Thus she can be used as a distraction/wild card against other players.
- Like all NPC invaders throwing an Undead Hunter Charm at her while she's low on health will stop her from being able to Estus, preventing her from prolonging the fight.