If a monster is Special Summoned from your opponent's Extra Deck, while this card is in your GY (except during the Damage Step): You can Set this card, but banish it when it leaves the field
Can this case be used for display or stacking
Weaknesses: [G] x 2 Resistances: N/A Retreat Cost: [C] [C] How to Play: Start using Dark Slumber to disrupt your opponent's Active Pokmon, especially if they rely on big attacks
That being said, it's a cool 3/4 flier that can either make 1/1 fliers or blink your creatures, both of which are extremely useful abilities, and all you need to trigger them is any noncreature spell
You still have to follow all timing restrictions, just like if the card were in your hand
Blue and black are the two colors that interact with it most