Gem Knight Master Diamond

Fusion/Effect Monster · Rock · EARTH · ★9

ATK 2900/DEF 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.”