So, I had a skype conversation with Xei and I'll explain the card for you guys.

IF it is sent to the graveyard by any means other than its effect, it can not revive.

IF the card is banished by any means, it will activate it's effect and move into the grave.

THEN, on the owner's next turn, it can revive itself granted the field is empty for them and the opponent controls a monster. 

So, with this in mind, I consider the card fine as long as i fix the wording. Anyone have issue with it?