Oceanus Shenron, the Anemancer (Event Pack 16)

[Barrier] [Blocker] [Auto] When this card attacks, choose up to 1 of your opponent's Battle Cards and switch it to Rest Mode; if the card you switched to Rest Mode has an energy cost of 2 or less, KO it. [Activate:Main] [Burst1] Discard this card : Look at up to 5 cards from the top of your deck, add up to 1 mono-yellow "Shadow Dragon" card with an energy cost of 8 or less among them to your hand, then shuffle your deck. You can't activate the [Activate:Main] skill on copies of this card for the turn.