I've created a custom undead for a campaign I'm running called a dread zombie. The idea is for it to have a bit of a "you've got to be kidding me" factor with how resilient the seemingly weak enemy is. In addition to giving it way more health than a typical zombie, (and a slightly less pathetic AC), I've added the regeneration trait to the monster similar to the one on a troll, but with 1d12+1 hit points instead of a flat ten.
Looking it over, most of what I made seems fine, but I'm not sure how having both undead resiliance and regeneration will work.
- Should the Dread Zombie immediately make the undead resiliance constitution save once its health goes to zero, or should it make the save only if it starts a round when it can't regenerate, since regeneration says that the creature only dies if that condition is met?
- Should I tweak the regeneration ability to make it weak to radiant damage instead of fire, in order to create more synergy between the two traits?