Umbral Invitation Towa (BT4-111) - Colossal Warfare

[Dark Over Realm 4] 1 (If you have at least 4 black cards in your Drop Area, you can play this card by sending all cards in your Drop Area to your Warp. Over Realm and Dark Over Realm can only be activated once per turn)
[Auto] When you play this card, choose up to 1 of the Battle Cards in your opponent's Battle Area with an energy cost of 3 or less and gain control of it.