Number 23: Lancelot, Dark Knight of the Underworld [YZ07-EN001] Ultra Rare 81 you may play 1 [Diaboromon]

you may play 1 [Diaboromon] Token without paying its memory cost

place that monster on the bottom of the deck

They are the Defenders of Humanity

then target 1 "Time Thief" monster in your GY

if a monster

Number 23: Lancelot, Dark Knight of the Underworld [YZ07-EN001] Ultra Rare 81 you may play 1 [Diaboromon]Set: ZEXAL Manga Promotional Cards Card type: Xyz Effect Monster Rarity: Ultra Rare Attack: 2000 Defense: 1500 2 Level 8 monsters This card can attack your opponent directly while it has Xyz Material. When this card inflicts battle damage to your opponent: You can target 1 face up monster your opponent controls; destroy it. Once per turn, during either player's turn, when a Spell Trap Card, or another monster's effect, is activated: Detach 1 Xyz