Currently, when a player has the Soulsteal effect they will gain health based on the damage they do to a mob. However, when a mob has this effect, they do not gain any health for any damage done to either a player or an NPC. Personally, I think this should change, as almost every other potion works for mobs and players alike, and it could be a useful tool for pack makers like myself - For example, I'm adding custom bosses in my modpack, and I wanted one of the bosses to be able to have life steal. So seemingly the Soulsteal effect should be perfect, but unfortunately it does not work for mobs.

I know this is a minor thing but I'd really love to see it added/fixed. Thanks for the awesome mods!