15 cards where the cards are dual lands from the cycle that gains 1 life

Akoum Refuge (Commander 2019 #226)
Bloodfell Caves (March of the Machine #267)
Blossoming Sands (March of the Machine #268)
Dismal Backwater (March of the Machine #269)
Graypelt Refuge (Commander 2019 #249)
Jungle Hollow (March of the Machine #270)
Jwar Isle Refuge (Zendikar Rising Commander #133)
Kazandu Refuge (Commander 2019 #256)
Rugged Highlands (March of the Machine #271)
Scoured Barrens (March of the Machine #272)
Sejiri Refuge (Kaldheim Commander #118)
Swiftwater Cliffs (March of the Machine #273)
Thornwood Falls (March of the Machine #274)
Tranquil Cove (March of the Machine #275)
Wind-Scarred Crag (March of the Machine #276)

The message was clear to Sorin—time to search for something else.