Ghostrick Festival

1 non-Link "Ghostrick" monsterYou can also use a face-down "Ghostrick" monster you control as material to Link Summon this card. While a "Ghostrick" card is in a Field Zone, your "Ghostrick" monsters can attack directly. When an opponent's monster declares an attack: You can Tribute this card; Special Summon 1 "Ghostrick" monster from your Deck in face-down Defense Position. You can only use this effect of "Ghostrick Festival" once per turn.