yugioh deck simulator Steam Workshop::Yugioh Structure Decks (Yu-Gi-Oh!)

(3) When a card or effect is activated that targets this card on the field (Quick Effect): You can discard 1 card

These cards are incredibly rare, so don't be surprised if this Secret Mission takes you a while to complete

Keystone Seal also blocks Power Spray from being used during the opponent's turn, meaning they can use Claydol's Cosmic Power to help set up their board

Extra Deck 5 Millennium-Eyes Restrict X DARK Level 1 [ Spellcaster / FusionEffect ] ATK 0 DEF 0 "Relinquished" + 1 Effect Monster Once per turn, when your opponent activates a monster effect (Quick Effect): You can target 1 Effect Monster in your opponent's field or GY