Mikazukinoyaiba, the Moon Fang Dragon

“During the End Phase, if this card is in your hand or GY: You can Special Summon it, but place it on the bottom of the Deck when it leaves the field. You can discard 1 card; add 1 Level 7 DARK Dragon monster from your Deck to your hand. You can only use each effect of "Mikazukinoyaiba, the Moon Fang Dragon" once per turn.”