Mossfire Egg

Drop a single mana into this artifact and you have parked a deferred draw step on the battlefield, paid for with two generic mana and a tap when you finally crack it. The rate looks punishing on paper: you pay one to play it, then two more plus a tap to convert, so the math never works as ramp and nobody mistakes it for acceleration. What it actually does is filter two generic mana into Gruul colors at the precise moment you need them, while replacing itself with a fresh card on dissolution. That cantrip clause is the entire reason the design holds together. Plain mana rocks of the same era shrank your hand without compensation; this one hands a card back when it cracks, so the fixing arrives attached to a draw rather than a tax. The activation is gated behind a cost instead of being free precisely because the payoff is double: you choose when the red-green appears, and you choose it knowing a card rides along. Modest as the numbers read, the egg encodes a real idea about color fixing as a held resource that converts into a draw step on demand, the kind of slow, on-board flexibility that rewards a pile built to cast off-color spells one at a time. It is not fast and it does not pretend to be; it is patient fixing that never costs you a card.