Black Smoke Dragon, Minus Energy Beyond Limits

[Permanent] This card can't attack. [+1] [Activate:Main] Choose up to 1 of your yellow "Shadow Dragon" cards with an energy cost of 8 or less and it gains [Barrier] until the end of your opponent's turn. [-1] [Activate:Main] f your Leader is a yellow "Shadow Dragon" card : Add cards from your life to your hand until you have 6 life left, place up to 1 yellow "Shadow Dragon" card from your Drop or Warp at the bottom of your deck, and increase the specified cost of this card by YY for the turn.