Library of Leng [30th Anniversary Edition] Lightning[+30] using monsters you control as

using monsters you control as material

(This Special Summon is treated as a Fusion Summon)

Set: Legendary Collection 3: Yugi's World Card type: Normal Trap Rarity: Ultra Rare Attack: 0 Defense: 0 Target 1 Spell/Trap Card your opponent controls

Spend this mana only to cast a creature spell of the chosen type

Set: Ancient Guardians Card type: Normal Spell Rarity: Collector's Rare Discard 1 Level 8 monster

Library of Leng [30th Anniversary Edition] Lightning[+30] using monsters you control asSet: 30th Anniversary Edition Type: Artifact Rarity: Uncommon Cost: {1} You have no maximum hand size. If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.