Check Land

Two-color nonbasic lands originating in Innistrad that enter tapped unless you control a land with one of two specific basic land types. Glacial Fortress checks for a Plains or an Island, Dragonskull Summit checks for a Swamp or a Mountain, and Hinterland Harbor checks for a Forest or an Island. They tap for either of two colors once online. Distinct from land_types.fast_land and land_types.slow_land, which gate entry on the NUMBER of other lands you control rather than their basic land types, and from land_types.reveal_land, which checks your hand for a matching basic instead of the battlefield.