Ari Shadeslayer

+3: Ari Shadeslayer deals damage equal to the ammount of loyalty counters to target creature or planeswalker
-5: Ari Shadeslayer becomes a X/X Dragon token where X is equal to the ammount of loyalty counters on Ari Shadelayer.
-13: Destroy target black creature. You deal X damage to any target and create X 4/4 Dragon tokens, where X is it's Mana Value