A curse that whispers a fragment of forbidden truth.
When the caster opens their mouth to utter a single word in an otherworldly tongue, the sound becomes a living poison that gnaws at the listener's sanity.
The target is seized by the delusion that all the eyes of the abyss are fixed solely upon them, and they collapse under their own weight.
The abyss does not care if one does not peer into it; for they are always peering into us.