Their name stems from the fact that they check if the player controls a land with a basic land type that corresponds with either color the land can produce. If this condition is not met, they enter the battlefield tapped.
Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.
: Add or .
List of check lands
- Glacial Fortress (/)
- Drowned Catacomb (/)
- Dragonskull Summit (/)
- Rootbound Crag (/)
- Sunpetal Grove (/)
- Isolated Chapel (/)
- Sulfur Falls (/)
- Woodland Cemetery (/)
- Clifftop Retreat (/)
- Hinterland Harbor (/)
- Check lands work with nonbasic lands that have basic land types.
- Tainted lands are another cycle of dual lands that provide an upside if the player controls a land of a particular type — in this case exclusively a swamp. They enter untapped and always tap for one colorless mana, but can also be activated for colored mana if the player controls a swamp.
- The Castles and Wilds lands of Throne of Eldraine also check for basic land types. The Castles check for one and have an activated ability; and the Wilds check for three others, have the type themselves, and come with a bonus ability if they enter untapped.
- Allied color checklands have the same artwork in each of their Core Set printings.