Warpblast

Cast a bolt of green Warplighting from the caster's hands. The target has to take 6d8 warp damage, the caster will take 1d10 chaos corruption, which is remembered by the DM.

This spell can only be used if the caster has been converted to chaos, otherwise, the caster takes 10d8 chaos damage

If the target is a chaos worshipper and is able to use magic, they can make a WIS save to prevent taking damage.

On higher spell slots, add 1d8 chaos damage per higher spell slot above 4.