Rustic Clachan is a rare Land card from Duel Decks: Elspeth vs. Tezzeret (DDF), collector number 34. Current market price: $0.33, TCGplayer market prices via Scryfall.
As this land enters, you may reveal a Kithkin card from your hand. If you don't, this land enters tapped. {T}: Add {W}. Reinforce 1—{1}{W} ({1}{W}, Discard this card: Put a +1/+1 counter on target creature.)