There are also lots of effects that we don't allow at common, such as tutoring, reanimation, permanent control change, spell copying, etc
Its Vengeance Fletching attack deals 70+ damage, scaling with Ancient cards in the discard pile, while Speed Wing offers a potent 120 damage
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.) Illustrated by Jonas De Ro Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
You can either manually set the prices or use TCGplayers automated pricing tool to match the market rates
When comparing changelings with no real utility, cheaper is always better, since their primary purpose is to fuel tribal support cards: Universal Automaton is way better than Chameleon Colossus, for example