سيرين، شبح الخدع

Cannot be Normal Summoned, unless you control a "Ghostrick" monster. If this card is Normal Summoned or flipped face-up: Send the top 2 cards of your Deck to the GY, then, if there was a "Ghostrick" card among them, you can apply 1 of these effects.
● Add 1 "Ghostrick" Spell/Trap from your Deck to your hand.
● Change 1 Effect Monster your opponent controls to face-down Defense Position.
Once per turn: You can change this card to face-down Defense Position.