Ephemeral Shields [Mystery Booster] Hidden Arsenal during a turn in which

during a turn in which you activated a Spell Card

If this card in its owner's possession is destroyed by an opponent's card: You can target 1 Level 8 or lower DARK Dragon Synchro Monster in your GY

"To forgive our enemies is to forgive ourselves

"Who needs the sun when you've got me around

if this card is in your GY (Quick Effect): You can Tribute 2 Synchro Monsters

Ephemeral Shields [Mystery Booster] Hidden Arsenal during a turn in whichSet: Mystery Booster Type: Instant Rarity: Common Cost: {1}{W} Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)