Awakening stone on AA

I have 2 generic 4* awakening stones. I ranked AA up a little to play with and he's a straight killer. I don't have him in a 3* so was just looking for some insight as to it's he's worth a generic stone.
I won't have time to grind arenas to dup him.
I won't have time to grind arenas to dup him.
1
Comments
Whatever you choose, just understand and be ok with the possibility of duping him on your next crystal
Its your choice
PS: I have him at R5 and destroyed The Collector with him