Thanks for the feedback. ;D
No perpetuation cost was my initial thought, but I thought it might make it a little unbalanced. Maybe 5 perp. reduced to 0 with merits? (Merits into spirit perp. cost being the cause of the idea)
Being able to heal the Avatar would be nice, too, so that way, it can actually restore some HP without using a BP:Ward, making it a little more viable for soloing.
