Pearlspear Courier is a uncommon Creature — Human Soldier card from Onslaught (ONS), collector number 48. Current market price: $0.07 (foil $0.70), TCGplayer market prices via Scryfall.
You may choose not to untap this creature during your untap step. {2}{W}, {T}: Target Soldier creature gets +2/+2 and has vigilance for as long as this creature remains tapped.