1 "Gem-Knight" monster + 1 Thunder-Type monsterMust first be Fusion Summoned. Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 face-up card on the field; destroy that target.
You can send 1 “Gem-Knight” card from your hand to destroy 1 face-up card on the field. This effect can be used once per turn.
Can be Fusion Summoned using any “Gem-Knight” monster + 1 Thunder-type monster, good versatility.
Decent DEF stats, susceptible to position switching plays.
If your goal is to get Gem-Knight Master Diamond out as soon as possible, it is suggested you prioritize Fragment Fusion method because it can send your Fusion “Gem-Knight” monsters to the Graveyard quickly.
Gem-Knight Master Diamond can assimilate the effect of Fusion “Gem-Knight” monsters in your Graveyard as its own effect. This is a good way to utilize your Fusion “Gem-Knight” monsters should they were sent to the Graveyard.
These are the Thunder-type monsters, and also listed as “Gem-Knight” monsters, that can be used to Fusion Summon Prismaura.
Fragment Fusion allows you to banish Fusion material monsters from your graveyard and Special that Fusion monster from your Extra Deck, but it is destroyed during your End Phase. Pyroxene Fusion allows you to send Fusion material monsters from your Hand or Field to the Graveyard, and Special Summon that Fusion monster from your Extra Deck. Particle Fusion allows you to send Fusion material monsters from your Field to the Graveyard, and Special Summon that Fusion monster from your Extra Deck. Additionally, you can banish this card, target 1 “Gem Knight” fusion material in your graveyard; The Fusion Summoned monster gains that monster’s ATK until the End Phase.
Since you are most likely to perform a considerable amount of Fusion summons to get to use Gem-Knight Master Diamond’s effect, you can use these cards to support your Fusion actions. Fusion Recycling Plant can recycle 1 fusion material monster to your hand, and also search for Polymerization from your deck. King of the Swamp can be treated as 1 fusion material required for Fusion Summon, and at the same time it also can be used to search 1 Polymerization from your Deck. Fusion Sage can search 1 Polymerization from your deck.