Check lands enter untapped if you control a land with one of the matching basic land types. They were first introduced in Magic 2010 and Innistrad. Check Lands are a generally low cost option for good mana fixing.
cards found.
Sunpetal GroveThis land enters tapped unless you control a Forest or a Plains.
{T}: Add {G} or {W}.
Sunpetal Grove
Sulfur FallsThis land enters tapped unless you control an Island or a Mountain.
{T}: Add {U} or {R}.
Sulfur Falls
Rootbound CragThis land enters tapped unless you control a Mountain or a Forest.
{T}: Add {R} or {G}.
Rootbound Crag
Hinterland HarborThis land enters tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.
Hinterland Harbor
Glacial FortressThis land enters tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.
Glacial Fortress
Drowned CatacombThis land enters tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.
Drowned Catacomb
Dragonskull SummitThis land enters tapped unless you control a Swamp or a Mountain.
{T}: Add {B} or {R}.
Dragonskull Summit
Clifftop RetreatThis land enters tapped unless you control a Mountain or a Plains.
{T}: Add {R} or {W}.
Clifftop Retreat
Woodland CemeteryThis land enters tapped unless you control a Swamp or a Forest.
{T}: Add {B} or {G}.
Woodland Cemetery
Isolated ChapelThis land enters tapped unless you control a Plains or a Swamp.
{T}: Add {W} or {B}.