Fortress Kin-Guard is a common Creature — Dog Soldier card from Tarkir: Dragonstorm (TDM), collector number 12. Current market price: $0.13 (foil $0.20), TCGplayer market prices via Scryfall.
When this creature enters, it endures 1. (Put a +1/+1 counter on it or create a 1/1 white Spirit creature token.)