Mm'menon, Uthros Exile {1}{U}{R}
Legendary Creature — Jellyfish Advisor
Identity
Izzet
EDHREC rank
#9,092
Cheapest printing
US$0.24
TCGplayer
Printings
1
Flying
Whenever an artifact you control enters, put a +1/+1 counter on target creature.
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.