Celestial Dawn

A color-fixing engine disguised as a chromatic identity bomb. The conceit is that it rewrites your entire deck around white at the cost of one enchantment: every land you control becomes a Plains, so all of your lands tap for white, and that white mana can then be spent as if it were any color. The flip side of the bargain is that any mana you produce by other means collapses into colorless, so the deck only functions if Plains-converted lands are your real source of power. The card is doing two things at once. First, it is a manabase that smooths any color requirement through a single converted resource, which makes it a tempting fixer for greedy white-based brews willing to fold their whole mana production into one color. Second, and this is the part that ages strangely, it recolors your nonland permanents, spells, and the nonland cards in your hand and library to white, which turns the enchantment into a quiet defensive layer against protection-from-color effects and color-based removal in an era when those were everywhere. The recoloring puts it in the same structural family that Painter's Servant later weaponized for combo rather than fixing. The colorless restriction is the whole bargain: the card does not hand you extra color so much as launder your entire mana production through white, and you pay for the privilege by surrendering everything that is not a converted Plains.