Maga, Traitor to Mortals {X}{B}{B}{B}
Legendary Creature — Human Wizard
BlackCommander: legal
Identity
Black
EDHREC rank
#20,471
Cheapest printing
US$3.10
TCGplayer
Printings
1
Maga enters with X +1/+1 counters on it.
When Maga enters, target player loses life equal to the number of +1/+1 counters on it.
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.