Valkyrie Sechste (Secret Rare) [SAST-EN088-SeR]

If this card is Special Summoned: You can Special Summon 1 "Valkyrie" monster from your Deck, except "Valkyrie Sechste". During your Main Phase: You can send the top 2 cards of your opponent's Deck to the GY. You can only use each effect of "Valkyrie Sechste" once per turn.