Barbed Bloodletter Blazethorn Scarecrow Blight Sickle Boggart Ram-Gang Cinderbones Corrosive Mentor Duergar Cave-Guard Everlasting Torment Fang Skulkin Fists of the Demigod Harvest Gwyllion Hateflayer Inescapable Brute Juvenile Gloomwidow Kulrath Knight Lockjaw Snapper Massacre Girl, Known Killer Massacre Girl, Prime Killer Midnight Banshee Necroskitter Needle Specter Noxious Hatchling Oddric, Lunar Marquis (playtest) Oona's Gatewarden Puncture Blast Raven's Run Rendclaw Trow Rustrazor Butcher Scuzzback Scrapper Sickle Ripper Slinking Giant Smoldering Butcher Spinerock Tyrant Stigma Lasher Thornwatch Scarecrow Tower Above Twinblade Slasher Village Pillagers Wildslayer Elves Wither and Bloom Witherscale Wurm Woodlurker Mimic
It can come out larger the further you are into a game, and benefits from other cards that can put counters on it
Meanwhile, Jund could just die to Prowess in a turn
The reality is that fast mana cards are so good that they are banned or restricted almost everywhere else
To get the most out of Goldspan Dragon, you can consider using Gadrak, the Crown-Scourge, Magda, Brazen Outlaw, and Brass's Bounty.
The fact that a single card can sell for seven figures still blows my mind