The Mechanist, Aerial Artisan {2}{U}
Legendary Creature — Human Artificer Ally
BlueCommander: legal
Identity
Blue
EDHREC rank
#6,802
Cheapest printing
US$0.26
TCGplayer
Printings
3
Whenever you cast a noncreature spell, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.")
{T}: Until end of turn, target artifact token you control becomes a 3/1 Construct artifact creature with 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.