Pia Nalaar is a rare Legendary Creature — Human Artificer card from Commander 2021 (C21), collector number 177. Current market price: $0.26, TCGplayer market prices via Scryfall.
When Pia Nalaar enters, create a 1/1 colorless Thopter artifact creature token with flying. {1}{R}: Target artifact creature gets +1/+0 until end of turn. {1}, Sacrifice an artifact: Target creature can't block this turn.