Everglove Courier is a uncommon Creature — Elf card from Onslaught (ONS), collector number 262. Current market price: $0.06 (foil $0.55), TCGplayer market prices via Scryfall.
You may choose not to untap this creature during your untap step. {2}{G}, {T}: Target Elf creature gets +2/+2 and has trample for as long as this creature remains tapped.