3 "Gem-Knight" monstersMust first be Fusion Summoned with the above Fusion Materials. You can only Special Summon "Gem-Knight Lady Brilliant Diamond(s)" once per turn. Once per turn: You can send 1 "Gem-Knight" monster you control to the Graveyard, and if you do, Special Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, ignoring its Summoning conditions.
Sends other face-up Gem-Knight monster you control to the Graveyard, in order to Special Summon Gem-Knight Fusion monsters from your Extra Deck. This effect can be used once per turn.
Must use 3 “Gem-Knight” monsters for a Fusion summon.
Since it is costly to Special Summon this monster, it is recommended that you add extra protection for it, as it can constantly fill your Field by replacing your weak Gem-knight monsters with powerful Gem-Knight Fusion monsters.
Gem-Knight Fusion Monster
Gem-Knight Lady Brilliant Diamond can use its effect to Special Summon any of the listed Gem-Knight Fusion monster to the Field, ignoring their Summoning conditions.
Since you are most likely to perform a considerable amount of Fusion summons, 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. Fusion Reserve allows you to add 1 of the Fusion materials listed on the Fusion monster to your hand, and add 1 Polymerization from your Graveyard to your Hand.
I kinda liked the Synchro season of Arc-V, not just as a 5DS fan but because Roger was actually a pretty good villain imo. Season 3 is the really awful part of Arc-V. I have no idea how they managed to squander it so thoroughly.