Valkyrie Sigrun

If this card is in your hand: You can target 1 face-up Spell/Trap you control; send it to the GY, and if you do, Special Summon this card. If this card is Normal or Special Summoned: You can Special Summon 1 Level 8 or lower "Valkyrie" monster from your hand or GY. You can only use each effect of "Valkyrie Sigrun" once per turn.