Subterranean Shambler is a common Creature — Elemental card from Time Spiral (TSP), collector number 178. Current market price: $0.06 (foil $0.29), TCGplayer market prices via Scryfall.
Echo {3}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature enters or leaves the battlefield, it deals 1 damage to each creature without flying.