Set: Synchron Extreme Structure Deck
Card Number: SDSE-EN018
Monster Type: Spellcaster
Card Text: During your opponent's Main Phase: You can send this card from your hand to the Graveyard, then target 1 face-up Effect Monster your opponent controls; negate that opponent's face-up monster's effects until the end of this turn (this is a Quick Effect).
Card Type: Tuner monster
Name: Effect Veiler