Whenever an antimatter vortex annihilates an object or monster, it should behave like actual antimatter would and produce an explosion, losing some HP in the process. This allows a player to defeat them by throwing junk at them to reduce their HP until they die, but if there is no junk available the player will have to sacrifice some valuable item.

An Infidel not carrying the Amulet can still cast spells (in contrast to the current setup where they cannot), but instead of casting the spells with Pw, they use blood magic and use HP instead. It doesn’t necessarily cost as much HP as it would Pw - there can be a scaling factor.

If trying to cast a spell that would cost more Pw than the hero has current HP, they die.