Hircine's Fortitude used to have a heal over time. Here's an example screenshot, taken from a build video from 2015:
Hircine's Fortitude can still be allowed to scale off of Maximum Health while having a heal over time, and it could even be allowed to heal a second target, if the tooltip for Polar Wind is anything to go off of:
PC/NA — Lone Werewolf, the EP Templar Khajiit Werewolf