Gem-Knight Master Diamond [DT07-EN083] Ultra Rare Lightning[+10] if you control seven or

if you control seven or more Plains

All Mountains are Plains

Set: Sun & Moon: Unbroken Bonds Type: Fairy Rarity: Ultra Rare Retreat cost: Colorless

lavamancer

Set: Pokémon Rumble Type: Darkness Rarity: Promo Retreat cost: Colorless

Gem-Knight Master Diamond [DT07-EN083] Ultra Rare Lightning[+10] if you control seven orSet: Duel Terminal 7 Card type: Fusion Effect Monster Rarity: Ultra Rare Attack: 2900 Defense: 2500 3 "Gem Knight" monsters Must first be Fusion Summoned. This card gains 100 ATK for each "Gem " monster in your Graveyard. Once per turn: You can banish 1 Level 7 or lower "Gem Knight" Fusion Monster from your Graveyard; until the End Phase, this card's name and original effect become the same as that banished monster's.