Darkness Energy (142/147) [Aquapolis] XY82 but it cannot be used

but it cannot be used as a Synchro Material for a Summon

Set: Stardust Overdrive Card type: Effect Monster Rarity: Secret Rare Attack: 2800 Defense: 2300 If you have exactly 4 Fairy-Type monsters in your Graveyard

Set: Legacy of Darkness Card type: Fusion/Effect Monster Rarity: Super Rare Attack: 2000 Defense: 1200 "Warrior Dai Grepher" + "Spirit Ryu" This monster can only be Fusion Summoned by the above Fusion Material Monsters

Set: Shonen Jump Magazine Promos Card type: Effect Monster Rarity: Ultra Rare Attack:

Darkness Energy (142/147) [Aquapolis] XY82 but it cannot be usedSet: Aquapolis Type: Special Energy Rarity: Rare