Brilliant Fusion 
33
Continuous SpellWhen this card is activated: Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, using monsters from your Deck as Fusion Material, but change its ATK/DEF to 0. If this card leaves the field, destroy that monster. Once per turn: You can discard 1 Spell; the monster Special Summoned by this card's effect gains ATK/DEF equal to its original ATK/DEF, until the end of your opponent's turn. You can only activate 1 "Brilliant Fusion" per turn.
Printings:
Clash of Rebellions: CORE-EN056 (Super Rare) - 2015-08-062016 Mega-Tin Mega Pack: MP16-EN082 (Super Rare) - 2016-09-01
OTS Tournament Pack 6: OP06-EN002 (Ultimate Rare) - 2017-12-07
Battles of Legend: Relentless Revenge: BLRR-EN064 (Secret Rare) - 2018-06-28
Quarter Century Stampede: RA04-EN254 (Platinum Secret Rare) - 2025-04-10
Quarter Century Stampede: RA04-EN254 (Quarter Century Secret Rare) - 2025-04-10
Prices:
Cardmarket: 0.34 €TCGplayer: $ 0.44