Invoke Curse 6

You curse a target as the bestow curse spell, except that you can use this ritual to affect a target at any distance, so long as you know their name, they are on the same plane, have an appropriate object for the Sacrifice step. However, failing the Release Power step results in a 50% chance that the curse rebounds and is inflicted upon the ritual leader instead of the intended target. The curse’s target can attempt a Will save based on the ritual’s level to negate the curse.

This ritual can be cast at 4th, 5th, or 6th level, primarily increasing the saving throw DC to resist the curse’s effects.