Honestly the only useful death sorcery within the small selection of death sorceries. Ancient Death Rancor is what Rancorcall wishes it can be as it staggers more enemies as well as having slightly more range due to the skull's ability to explode. Why couldn't we get the slow moving exploding skull as a sorcery from the skeleton mages? How about the fast single-skull projectile attack that skeleton mages use? It's a shame that there's no effort to differentiate between the two as Ancient Death Rancor is just way better than Rancorcall in every aspect except FP cost.