Forge says that I can't play my deck because I have more than one [[Arid Mesa]] in it. But my decklist clearly shows I only have one.
#I can't play my deck because of 2 Arid Mesas
zinc pewter
ocean irisBOT
Land
, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.