Q:
How to make my summonings regenrate health?
They regenerate health out of combat, and if you desummon/resummon them they’ll be resummoned at full HP. You can also heal them just like players using Regeneration (boon), Transfusion (trait), Well of Blood, or anything else like that.
Staff #2 is your friend(quick cooldown and regeneration boons. And the Flesh of the Master trait helps loads keeping them up