The worst generally cost way too much mana to cast, have terrible stat lines, have drawbacks that can harm you, or have abilities that are so niche as to be useless
Your defiance is amusing, little mage
As for its Station +8, it gives it flying and gives hexproof and indestructible to your other artifacts
For example, if you control Elesh Norn and a permanent with the ability "Whenever a creature enters the battlefield, you gain 1 life," a creature entering the battlefield under an opponent's control will cause that ability to trigger twice
COVERT TECHNICIAN Like most of the cards this far from the top of our list, Covert Technician is only at its best in specific situations, or when paired with the proper support
Bonny Pall, Clearcutter A busted Simic legend that produces an incredible amount of power, card advantage, and ramp