Your search for "plains 345" revealed the following:
Plains (340) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andreas Rocha
Plains (334) (8ED) from Eighth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Fred Fields
Plains (320) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Plains (324) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Nils Hamm
Plains (031) (SLP) from Secret Lair Promo, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: John Avon
Plains (135) (PCA) from Planechase Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Plains (331) (ODY) from Odyssey, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Alan Pollack
Plains (145) (HOP) from Planechase, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dave Kendall
Plains (030) (BRC) from The Brothers' War Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jorge Jacinto
Plains (785) (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jonas De Ro
Plains (294) (3ED) from Revised Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jesper Myrfors Card Text:[W]
Plains (338) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Poole
Plains (338) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Michael Komarck
Plains (337) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rebecca Guay
Plains (323) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plains (393) - The Astrology Lands (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Jeanne D'Angelo Card Text: Zodiac Lands
Plains (285) (CMA) from Commander Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plains (325) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Howard Lyon
Plains (337) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plains (339) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Plains (232) (Foil) (M13) from Magic 2013, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Nils Hamm
Plains (231) (M13) from Magic 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Noah Bradley
Plains (331) (ONS) from Onslaught, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Plains (251) (Foil) (M15) from Magic 2015, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Nils Hamm
Plains (318) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plains (312) (TRK) from Star Trek, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Shahab Alizadeh
Plains (307) (TRK) from Star Trek, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Paulius Daščioras
Plains (bh334) (WC98) (Brian Hacker) from World Championship Decks 1998, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Terese Nielsen Card Text:WNot a Tournament Legal card.
Plains (326) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andreas Rocha
Plains (306) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Zhillustrator
Plains (251) (ISD) from Innistrad, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Plains (331) (INV) from Invasion, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plains (344) (Foil) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: John Avon
Plains (342) (Foil) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Rob Alexander
Plains (291) (CMA) from Commander Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Plains (331) (6ED) from Classic Sixth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Tom Wänerstrand
Plains (334) (6ED) from Classic Sixth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Fred Fields
Plains (334) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Titus Lunter
Plains (331) (8ED) from Eighth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plains (333) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Alayna Danner
Plains (045) (JMP) from Jumpstart, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Johannes Voss
Plains (331) (Foil) (INV) from Invasion, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: John Avon
Plains (333) (Foil) (ODY) from Odyssey, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Eric Peterson
Plains (334) (TMP) from Tempest, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Terese Nielsen Card Text:T: Add W to your mana pool.
Plains (335) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: James Paick
Plains (301) (CMD) from Commander 2011, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Michael Komarck
Plains (341) (Foil) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Scott Bailey
Plains (gn331) (WC04) (Gabriel Nassif) from World Championship Decks 2004, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon Card Text:WNot a Tournament Legal card.
Plains (332) (INV) from Invasion, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Ben Thompson
Plains (318) (TRK) from Star Trek, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Leon Tukker