I see how it is
Like most Magic: The Gathering cards, the value of Stormscale Scion depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Tarkir: Dragonstorm)
The untap is less useful still outside of Spliter Twin gimmicks
Anytime you would make a token with Jinnie Fay, Jetmirs Second out, you can choose to have those tokens become either: 2/2 green Cat creature tokens with haste 3/1 green Dog creature tokens with vigilance Those tokens can replace everything from Food tokens to other creatures, but since it's a may effect you can control if they do or not
Illustrated by Daren Bader Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
There have been a lot of different variants of mass removal, from exiling creatures (Final Judgment) to putting them into a library (Terminus)