If, however, there are no legal targets for the Drag Below ability when Dragon Turtle enters the battlefield (or you choose not to target anything), Dragon Turtle's ability will still resolve and cause it to be tapped and it won't untap during its controllers next untap step

Release date: 2018-04-02 Karn, Scion of Urza Adamant Will Aven Sentry Baird, Steward of Argive Benalish Honor Guard Benalish Marshal Blessed Light Board the Weatherlight Call the Cavalry Charge D'Avenant Trapper Danitha Capashen, Paragon Daring Archaeologist Dauntless Bodyguard Dub Evra, Halcyon Witness Excavation Elephant Fall of the Thran Gideon's Reproach Healing Grace History of Benalia Invoke the Divine Knight of Grace Knight of New Benalia Kwende, Pride of Femeref Lyra Dawnbringer Mesa Unicorn On Serra's Wings Pegasus Courser Sanctum Spirit Seal Away Sergeant-at-Arms Serra Angel Serra Disciple Shalai, Voice of Plenty Teshar, Ancestor's Apostle Tragic Poet Triumph of Gerrard Urza's Ruinous Blast Academy Drake Academy Journeymage The Antiquities War Arcane Flight Artificer's Assistant Befuddle Blink of an Eye Cloudreader Sphinx Cold-Water Snapper Curator's Ward Deep Freeze Diligent Excavator Divination Homarid Explorer In Bolas's Clutches Karn's Temporal Sundering Merfolk Trickster The Mirari Conjecture Naban, Dean of Iteration Naru Meha, Master Wizard Opt Precognition Field Relic Runner Rescue Sage of Lat-Nam Sentinel of the Pearl Trident Slinn Voda, the Rising Deep Syncopate Tempest Djinn Tetsuko Umezawa, Fugitive Time of Ice Tolarian Scholar Unwind

The question isnt whether Super Electric Breaker is a quality set its whether current prices represent an opportunity before sealed supply tightens further
I doubt it was officially sold due to the imperfect design but some people like their gold bars to be unique