Oceanus Shenron, Elegant Evil (Zenkai Series Tournament Pack Vol.8) (P-612) - Tournament Promotion Cards

[Blocker]
[Auto] [Limit 1] Y : When this card is sent from your Drop to your Warp by a "Shadow Dragon" card's skill, play this card from your Warp.
[Auto] When this card is played, choose up to 1 of your opponent's Battle Cards or Unisons and switch it to Rest Mode.
[Auto] At the end of your turn, switch this card to Active Mode.