its a proc build, Wearing the generals aspect set, you need to stack stamina luck and one other for 35's, exotics, heal action cost, weapon type action cost (i did pistols but heavy weapons or carbines also works) and healing potency. To activate you simply heal your target, then target something and hold down auto attack (left mouse to proc action between heals)

healing potency food (Trimpian), Luck drink of your choice (bivoli or another). Armors and Luck in ent buff

the pet should be an enfeeble one or shaken one to help the group out

if you have questions let me know!