Crawling Barrens is a rare Land card from Foundations (FDN), collector number 685. Current market price: $0.16, TCGplayer market prices via Scryfall.
{T}: Add {C}. {4}: Put two +1/+1 counters on this land. Then you may have it become a 0/0 Elemental creature until end of turn. It's still a land.