Haze Shenron, Negative Energy Explosion

If your Leader Card is a 《Shadow Dragon》 card : When this card is played from your hand or discarded by a 《Shadow Dragon》 card's skill, you may look at the top card of your deck; if it's a black 《Shadow Dragon》 card you may add it to your hand, otherwise, place it at the bottom of your deck.
When this card attacks, choose up to 1 of your opponent's Battle Cards, send it to its owner's Warp, then switch this card to Active Mode at the end of the turn.