Instead of attaching the equipment to a 0/0 black Phyrexian Germ token, for Mirrodin
This one becomes a vehicular copy of a creature and demonstrates Magic's loosey-goosey willingness to use both spellings of 'impostor' and 'imposter.' Mech starts off as a noncreature with a crew cost that animates it later on
The first consideration must be what fans of the crossover property like, and what they want from further adventures in their favorite fictional universes
3 Treacherous Urge Puppets can be creepy enough on their own, but Treacherous Urge takes it a step further
A deck with 18 lands may only draw 2-4 lands all game, while a deck with 24 lands is likely to hit a land every turn
Making mana-fixing as a strength as opposed to just mana acceleration relieves green being bad at other things, and Llanowar Elves has some aesthetic baggage, at least from my perspective