PoE Defeat a Unique Map Boss that is Possessed while in a Ritual

To complete the "Defeat a Unique Map Boss that is Possessed while in a Ritual" PoE 3.28 challenge (part of the Cross Contamination set), you must ensure the boss is both possessed by a Tormented Spirit and within an active Ritual encounter at the moment of death.

Preparation

Use a Tormented Scarab (Area is haunted by 4 additional Tormented Spirits) to ensure ghosts are present,
or Choose map with mods: Unique Bosses are Possessed

List of Ritual Scarabs

Name	Description	Stack
Ritual Scarab of Selectiveness	Rerolling Favours at Ritual Altars in Area has no cost the first 2 times Ritual Altars in Area allow rerolling Favours 2 additional times	Stack Size: 1 / 20 Limit: 2
Ritual Scarab of Wisps	Ritual Altars in Area spawn a Wildwood Wisp Wildwood Wisps grant 100% increased Tribute Gained to nearby Players	Stack Size: 1 / 20 Limit: 1
Ritual Scarab of Abundance	Rituals in Area offer 100% increased Favours	Stack Size: 1 / 20 Limit: 2
Ritual Scarab of Corpses	Rituals in Area contain an additional Rare Itemised Corpse Monster	Stack Size: 1 / 20 Limit: 2

The Process

Locate a Ritual altar near the boss room.
Lure the boss into the Ritual circle and kill it.
Activate the Ritual, which will cause the boss to respawn within it.
Ensure the boss becomes possessed by a Tormented Spirit (often happens naturally if the boss is possessed or if using Tormented mechanics).
Kill the possessed boss while the Ritual is active.

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