Ultimate Whirlwind Spin

This card gains 《Shadow Dragon》 in all areas.
(You can only activate this skill once per turn across all copies of this card.) If your Leader Card is black : Look at up to 5 cards from the top of your deck, add up to 1 black 《Shadow Dragon》 Battle Card among them to your hand, then shuffle your deck. You may choose 1 black 《Shadow Dragon》 card in your hand and discard it. If you do, up to 1 of your Leader Cards gets +1000 power for the turn.