Bayek of Siwa {3}{R}{W}
Legendary Creature — Human Assassin
Identity
Boros
EDHREC rank
#4,466
Cheapest printing
US$0.34
TCGplayer
Printings
3
Double strike
During your turn, other historic creatures you control have double strike.
Disguise {1}{R}{W} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.)
Keywords: disguise, double strike
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.