Comparing with Owl's eye:
- 5 (+3 bonus single slot) initial cost and 2 cost for 3 damage, 5|7 damage
- 8 initial cost and 3 cost for 5|6 damage, 1 damage
Even it is faster CC than Owl's eye, the cost of playing or CC-damage seems balanced.
So what is left? It's own damage! should be get Attack buff.
Not HP buff, HP buff makes it 11 initial cost assuming u'll use rage pot on yourself 1 time.