Omega Shenron, Collected Minus Energy

[Double Strike] [Z-Awaken] Y, if you have a total of 6 or more "Shadow Dragon" cards among all the cards in your Drop and Warp : Yellow "Syn Shenron" card. [Auto] At the end of your turn, draw 1 card, then switch all yellow "Shadow Dragon" cards in your Battle Area to Active Mode. [Activate:Main/Battle] Remove this card from the game : You may discard 6 yellow cards from your hand. If you do, choose all of your opponent's Rest Mode Battle Cards, ignoring [Barrier], then negate their skills and KO them.