Ultimate Dark Dragon-Slaying Bullet

[Counter: Play] If your opponent is playing a Unison Card, they may either remove a marker from it for every 2 cards in their Drop Area and Warp, or place it in their Drop Area instead of playing it. If they don't, your opponent can only attack one more time for the turn.
[Permanent] This card gains 《Shadow Dragon》 in all areas.
[Activate: Main/Battle][Limit 1] Your opponent chooses 1 of their Battle Cards with an energy cost less than the number of cards in their Drop Area and sends it to its owner's Warp.