Number 91: Thunder Spark Dragon [REDU-EN098] Ultimate Rare Synchro/Effect Monster it gains 700 ATK until

it gains 700 ATK until the end of this turn

Set: Arcane Rising Edition: 1st Edition Finish: Rainbow Foil Type: Action Rarity: Rare Class: Mechanologist Cost: 0 Put a Mechanologist item with cost 0 from your hand into the arena

it must be Normal Summoned in face-up Defense Position

while it remains on the field all of your opponent's monsters lose 500 ATK

Number 91: Thunder Spark Dragon [REDU-EN098] Ultimate Rare Synchro/Effect Monster it gains 700 ATK untilSet: Return of the Duelist Card type: Xyz Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 2000 3 Level 4 monsters Once per turn, you can activate 1 of these effects Detach 3 Xyz Materials from this card; destroy all other face up monsters on the field. Detach 5 Xyz Materials from this card; destroy all cards your opponent controls.