Dawnglow Infusion

Most lifegain X-spells ask one question: how much mana do you have? This one asks a second: what colors did it come from. Spend a green and you gain X. Spend a white and you gain X. Spend one of each and the declared X resolves twice, doubling the payout without raising the number you announced. That second clause inverts what the slash-symbol usually buys. Ordinarily it widens access, asking only that you produce one color or the other and treating the choice as a formality the deck never has to honor. Here producing both colors is the reward: a genuine two-color manabase converts the same X into twice the life. The single-color floor is deliberately plain, an X-spell lifegain effect of a shape that has existed in many forms. The interesting part is how the ceiling is gated: not behind an extra cost, not behind a sorcery-speed clause it already lives under, but behind the literal composition of the mana you tap. Efficiency becomes something the manabase has to earn rather than something the card grants outright, which is a quietly unusual lever to hang a payoff on.