Bog-Strider Ash is a common Creature — Treefolk Shaman card from Lorwyn (LRW), collector number 198. Current market price: $0.11 (foil $0.60), TCGplayer market prices via Scryfall.
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) Whenever a player casts a Goblin spell, you may pay {G}. If you do, you gain 2 life.