This card's name becomes "Cyber Dragon" while on the field or in the GY

Samurott #41Holo Rare $1.82 Electrode #52Uncommon $0.25 Numel #21Common $0.29 Pignite #25Uncommon $1.02 Cottonee #14Common $0.43 Grumpig #60Rare $0.45 Pikachu #50Common $3.00 Serperior #13Holo Rare $5.10 Delibird #38Uncommon $0.32 Lilligant #17Rare $0.80 Dark Wartortle #46Uncommon $3.72 Dark Wartortle #39Uncommon $3.14 Wartortle #42Uncommon $5.11 Wartortle #42Uncommon $33.75 Wartortle #63Uncommon $2.10 Wartortle #15Promo $66.35 Wartortle #92Uncommon $23.80 Wartortle #50Uncommon $4.67 Wartortle #75Uncommon $2.43 Wartortle #65Uncommon $3.28 Pokemon 2-Player Starter Set (Revised Base Set Reprint Run) $249.50 Base Set Theme Deck - "Blackout" (Revised Base Set Reprint Run) Base Set Theme Deck - "Zap!" (Revised Base Set Reprint Run) $499.95 Base Set Theme Deck - "Brushfire" (Revised Base Set Reprint Run) Base Set Theme Deck - "Overgrowth" (Revised Base Set Reprint Run) $685.00 Base Set Booster Pack [Revised Unlimited Edition] $786.87 Base Set Booster Box [Revised Unlimited Edition] Pokemon Base Set (Shadowless) [1st Edition] Booster Box

Not only does it effectively let you have two copies of a chosen partner commander, you can also copy legendary permanents with impudence
$0.49 Sazh Katzroy Final Fantasy $0.79 Balamb Garden, SeeD Academy Final Fantasy $0.49 Kain, Traitorous Dragoon Final Fantasy $1.99 Venat, Heart of Hydaelyn Final Fantasy $0.79 Choco, Seeker of Paradise Final Fantasy $0.49 Summon: G.F
Admittedly, its worth remembering that Brawl and Commander are literally different formats
Luffy, is a case in point