Book of Moon [YS17-EN025] Common Sea Serpent when your opponent activates a

when your opponent activates a Spell/Trap Card or effect (Quick Effect): You can reduce this card's Level by 2

Must be Special Summoned (from your hand) by shuffling 10 other cards with different names from your hand and/or field into the Deck and/or Extra Deck

the ATK/DEF of any linked monster(s) you opponent currently controls become 0

add 1 Level 1 Winged Beast monster from your Deck to your hand

) An opponent's monster that battles this card cannot declare an attack during your opponent's next 2 turns

Book of Moon [YS17-EN025] Common Sea Serpent when your opponent activates aSet: Starter Deck: Link Strike Card type: Quick Play Spell Rarity: Common Target 1 face up monster on the field; change that target to face down Defense Position.