Box of Friends [AC18-EN002] Super Rare Xyz/Effect Monster it gains 500 ATK until

it gains 500 ATK until the end of this turn

except "Tanngnjostr of the Nordic Beasts"

and keep it revealed until the Main Phase 1

Set: Speed Duel: Arena of Lost Souls Card type: Effect Monster Rarity: Common Attack: 2000 Defense: 2500 Gains 300 ATK/DEF for each "Harpie Lady" on the field

It gains 300 ATK/DEF

Box of Friends [AC18-EN002] Super Rare Xyz/Effect Monster it gains 500 ATK untilSet: Advent Calendar 2018 Card type: Effect Monster Rarity: Super Rare Attack: 0 Defense: 0 If this card is destroyed and sent to the GY: You can Special Summon from your Deck, 2 Normal Monsters with different names whose ATK or DEF is 0, in face up Defense Position, but they cannot be used as Synchro Material, also they are destroyed during your next End Phase. You can only use this effect of "Box of Friends" once per turn.