Mahadi, Emporium Master {1}{B}{R}
Legendary Creature — Devil
Identity
Rakdos
EDHREC rank
#1,291
Cheapest printing
US$0.44
TCGplayer
Printings
3
At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Keywords: treasure
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.