Geralf, the Fleshwright {2}{U}
Legendary Creature — Human Warlock
BlueCommander: legal
Identity
Blue
EDHREC rank
#6,981
Cheapest printing
US$1.04
TCGplayer
Printings
4
Whenever you cast a spell during your turn other than your first spell that turn, create a 2/2 blue and black Zombie Rogue creature token.
Whenever a Zombie you control enters, put a +1/+1 counter on it for each other Zombie that entered the battlefield under your control this turn.
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.