Portent Tracker is a common Creature — Satyr Scout card from March of the Machine (MOM), collector number 201. Current market price: $0.28 (foil $0.13), TCGplayer market prices via Scryfall.
{T}: Untap target land. {T}: Choose target battle. If an opponent protects it, remove a defense counter from it. Otherwise, put a defense counter on it. Activate only as a sorcery.