mtg playing cards from exile Urianger's Spell in Magic: The Gathering Commander Its controller may search their library for a basic land card In this discussion regarding MTG,

While there are likely better targets for your equipment spells, you can always switch them over once you can afford to do so

It's quite mathy, but he goes into a great deal of detail and explains his rationale, while not ignoring the realities of the game (there are one-mana Cycling cards, cards that fetch lands, cards that tap to add mana which aren't lands, and more.)

That mana can be any color or colorless.

Proxies are okay for personal play but cant be used at officially sanctioned WotC events

White looks fairly aggressive at common, so it shouldnt be too challenging to convert this from an underwhelming Nimble Innovator into an excellent card

Itll just stick on the field as a way to buff other creatures that enter the battlefield if you play it for , which is super synergistic with other dash cards