Vision, Synthezoid Avenger {4}
Legendary Artifact Creature — Robot Hero
ColorlessCommander: legal
Identity
Colorless
EDHREC rank
#15,650
Cheapest printing
US$0.28
TCGplayer
Printings
3
Flying
Whenever a player casts a spell, if it isn't that player's turn, choose one —
• Put a +1/+1 counter on Vision.
• Vision phases out. (Treat him and anything attached to him as though they don't exist until your next 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.