Curse of the Dark

This Skill can be used if the only Level 4 or higher monsters in your Deck are all either Dragon Type Normal Monsters or "Multistrike Dragon Dragias." [REQUIREMENT] None [EFFECT] 1 face-up DARK Attribute Normal Monster on your field that was Summoned this turn gains 500 ATK until the end of this turn. Then, if you have selected "Dragon Knight of Darkness," you can return 1 card from your hand to your Deck. If you do so, it gains 700 ATK as long as it stays face-up.