37 cards where the card types include “forest”

Arctic Treeline (Kaldheim #249)
Bayou (Vintage Masters #293)
Breeding Pool (Ravnica Remastered #275)
Canopy Vista (Murders at Karlov Manor Commander #252)
Cinder Glade (Murders at Karlov Manor Commander #255)
Commercial District (Murders at Karlov Manor #259)
Dryad Arbor (Duskmourn: House of Horror Commander #273)
Forest (Foundations #280)
Gate to Manorborn (Alchemy Horizons: Baldur's Gate #78)
Gingerbread Cabin (Commander 2021 #290)
Haunted Mire (Dominaria United #248)
Hedge Maze (Murders at Karlov Manor #262)
Highland Forest (Commander Legends: Battle for Baldur's Gate #896)
Indatha Triome (Ikoria: Lair of Behemoths #248)
Jetmir's Garden (Streets of New Capenna #250)
Ketria Triome (Ikoria: Lair of Behemoths #250)
Lush Portico (Murders at Karlov Manor #263)
Murmuring Bosk (Dominaria United Commander #220)
Overgrown Tomb (Ravnica Remastered #283)
Radiant Grove (Dominaria United #253)
Rimewood Falls (Kaldheim #266)
Sapseep Forest (Commander 2021 #313)
Savannah (Vintage Masters #311)
Scattered Groves (Outlaws of Thunder Junction Commander #315)
Sheltered Thicket (Outlaws of Thunder Junction Commander #319)
Snow-Covered Forest (Kaldheim #284)
Spara's Headquarters (Streets of New Capenna #257)
Stomping Ground (Ravnica Remastered #289)
Taiga (Vintage Masters #317)
Tangled Islet (Duskmourn: House of Horror Commander #306)
Temple Garden (Ravnica Remastered #290)
Tropical Island (Vintage Masters #321)
Underground Mortuary (Murders at Karlov Manor #271)
Wooded Ridgeline (Dominaria United #260)
Woodland Chasm (Kaldheim #274)
Zagoth Triome (Ikoria: Lair of Behemoths #259)
Ziatora's Proving Ground (Streets of New Capenna #261)

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