you need ways to protect, ramp to deploy them at a reasonable rate, ways to interact with your opponents, card draw, and so on
She'd copy Evolving WildsEvolving Wilds triggers to ramp, and eventually won using Mechanized ProductionMechanized Production and Solemn SimulacrumSolemn Simulacrum
HEROIC INTERVENTION You also want at least one of this effect
While opponents will be able to reap the benefits of this effect, as the Braids player you are capable of preparing huge and overcosted threats such as Blightsteel Colossus for free
This little critter also comes with incredibly powerful Equipment that you can give to it or any of your other Mouse buddies
Arcanis the Omnipotent Its not often that you tap a creature to draw three cards, and Arcanis the Omnipotent is also a wizard, a well-supported tribe