Darkness Energy 142 Aquapolis - Rare Condition:Lightly Played You can only activate 1

You can only activate 1 "Spellbook of the Master" per turn

this card gains 500 ATK for each Material the Xyz Monster had when it was banished

This card's Special Summon cannot be negated

If this card is destroyed: You can target 1 Spellcaster-Type monster in your Graveyard

Darkness Energy 142 Aquapolis - Rare Condition:Lightly Played You can only activate 1RarityRare Card TypeEnergy FormSpecial Evolves from null RuleIf the Pokmon Darkness Energy is attached to damages the Defending Pokmon (after applying Weakness and Resistance), the attack does 10 more damage to the Defending Pokmon. At the end of every turn, put 1 damage counter on the Pokmon Darkness Energy is attached to, unless it's Darkness or has Dark in its name. Darkness Energy provides Darkness Energy. (Doesn't count as a basic Energy card.)