Rust Goliath is a common Artifact Creature — Construct card from The Brothers' War (BRO), collector number 204. Current market price: $0.13 (foil $0.19), TCGplayer market prices via Scryfall.
Prototype {3}{G}{G} — 3/5 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.) Reach, trample