Illuminor Szeras {2}{B}
Legendary Artifact Creature — Necron
BlackCommander: legal
Identity
Black
EDHREC rank
#5,356
Cheapest printing
US$6.11
TCGplayer
Printings
2
Secrets of the Soul — {T}, Sacrifice another creature: Add an amount of {B} equal to the sacrificed creature's mana value.
Keywords: secrets of the soul
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.