Reviving Minions heal after avoiding damage for a short time, and automatically revive after a short delay when killed. This delay is reset whenever another Reviving Minion dies.
Raise spikes of bone from the earth in front of you, damaging enemies. The bones of Corpses and dead RevivingMinions in the area are ripped out and reassembled into short-lived Bone Construct Minions that fight for you. Larger Corpses create more than one Bone Construct.
Companions are a type of RevivingMinion that are more complex and powerful than typical Minions. By default you can only have one Companion of any type summoned at a time.
Minion Reforming is similar to MinionReviving, but only occurs at the end of the "Minion Reforming" Buff Timer that is granted while PersistentMinions are dead, as opposed to other effects that may revive Minions.