I would say it has a Dragon-Type going for it, since this will fall in love with the Dragon Rulers. That's probably quite problematic (even though they work very well by themselves).
Overall I think it is an okay card, but even so being able to go after any card is a little merciless, even if this thing is tricky to Summon. The stats may mitigate this, though, but I personally would rather it hit Face-Up cards instead. Ugh, but then it might be too weak considering where it might be placed.
In truth it is a little unorthodox! XD I think leaving it as it is may be fine, since you make solid points about the typing, but you have got to deal with the issues Dragon Rulers can come up with this.