Target relic gains Immobile and Pariah. Spaces within 4 spaces of it becomes Dead Magic Zone for 5 turns. When this effect ends, 3 Level 1 Shades are spawned in the affected area and the relic is destroyed.
Before a shoebox buff rounds, this was considered among the worst spells in the game. The original effect was on the lines of "Target opposing relic within 3 spaces becomes Possessed for 8 turns". Given the lack of competitive runes to possess, the cost and temporal effect, it was pretty bad, and for some time it was considered a joke.