GM Brief: Echoes vs. Undead

Echoes vs. Undead

The creatures in Thornwick are echoes — not true undead, but psychic impressions of the dead given temporary form by the veil-tear. They cannot be Turned by positive energy in the normal way, though Heal spells still damage them. They are vulnerable to ghost touch weapons and mental damage.

This distinction matters: a cleric who tries to channel positive energy will find it partially effective (half damage), which may confuse the party until they research the phenomenon. Sister Mirela can explain this after the first encounter.