10 cards where the cards are dual lands that check for other types

Clifftop Retreat (Outlaws of Thunder Junction Commander #278)
Dragonskull Summit (Duskmourn: House of Horror Commander #271)
Drowned Catacomb (Outlaws of Thunder Junction Commander #290)
Glacial Fortress (Ixalan #255)
Hinterland Harbor (Duskmourn: House of Horror Commander #284)
Isolated Chapel (Outlaws of Thunder Junction Commander #301)
Rootbound Crag (Ixalan #256)
Sulfur Falls (Outlaws of Thunder Junction Commander #322)
Sunpetal Grove (Ixalan #257)
Woodland Cemetery (Duskmourn: House of Horror Commander #326)

This search is finished. Now the real work can begin.