Jocasta, Automaton Avenger {3}
Legendary Artifact Creature — Robot Hero
ColorlessCommander: legal
Identity
Colorless
EDHREC rank
#13,406
Cheapest printing
US$0.30
TCGplayer
Printings
3
Flying
Whenever your commander deals combat damage to a player, put a +1/+1 counter on Jocasta.
Whenever you attack with your commander, if this card is in your graveyard, you may return it to the battlefield tapped and attacking.
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.