Dual Land

The Alpha/Revised "true" dual lands: each carries two basic land types, taps for either of its two colors, and enters untapped with no life payment, no reveal, and no other condition. The original ten cover both allied pairs like Tundra and Underground Sea and enemy pairs like Bayou. Their freedom from any entry cost is what makes them the cleanest fixing lands ever printed. Distinct from Shock Land, which also has two basic land types but charges 2 life to enter untapped, and from Check Land, which has no basic land types and enters untapped only when you already control a matching basic. A narrower slice of Mana Fixer, the umbrella for all color-fixing sources.