Loved the animation and the art. But the sound got a bit buggy when I summoned a horde. You could have slightly adjusted the position of the summons though, like I didn't know if I summoned more than 2 ninjas, when in screen I can only see 2. But once they started attacking, I realized there was much more than 2 and only God knows how many were there lol.
Fun little game. I enjoyed it.