Sauron, Lord of the Rings {5}{U}{B}{R}
Legendary Creature — Avatar Horror
Identity
Grixis
EDHREC rank
#5,144
Cheapest printing
US$0.50
TCGplayer
Printings
4
When you cast this spell, amass Orcs 5, mill five cards, then return a creature card from your graveyard to the battlefield.
Trample
Whenever a commander an opponent controls dies, the Ring tempts you.
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.