Its easy to summon, easy to abuse, and existed in a format that wasnt very pretty to play unless you were specifically playing a Dragon Ruler deck
To be honest, you might be better off running Iron Man in the 99 of a Captain America deck, simply because Cap also cares about equipment with high mana costs, cheats equip costs, and crucially adds white to your color identity
This means new players may have a higher chance of pulling a rare card and getting hooked
These cards combine to form an infinite mana loop that also creates infinite Thopter tokens, and it just so happens Breya's abilities let you filter mana into damage, life gain, or board removal as needed
So no matter what color you prefer to play, theres probably a good Magecraft card youll want to open this weekend when youre doing sealed events