Harbin, Vanguard Aviator {W}{U}
Legendary Creature — Human Soldier
Identity
Azorius
EDHREC rank
#15,066
Cheapest printing
US$0.17
TCGplayer
Printings
4
Flying
Whenever you attack with five or more Soldiers, creatures you control get +1/+1 and gain flying until end of turn.
Keywords: flying
Every printing
highest TCGplayer market first; a card with only a thin single listing shows its low
In short
A Commander deck is a commander and 99 other cards, one copy of each (except basic lands), all inside the commander's colour identity. Paste a full list into the deck price calculator to price it and check it against the format.