Please:rolleyes:
1. I don't like how ghosts attack.
2. a) It doesn't look good.
b) How do they deal damage while inside (wouldn't it be easier to just kill the creature right away)?
3. I probably wouldn't change the attack (because the concept is good:)), but I would add an ability that would kill at least one creature - this would create balance issues, so to solve them, I would have to reduce the stats of the ghosts a bit.

I'm waiting for your feedback...