Syrix, Carrier of the Flame {2}{B}{R}
Legendary Creature — Phoenix
Identity
Rakdos
EDHREC rank
#17,537
Cheapest printing
US$0.33
TCGplayer
Printings
3
Flying, haste
At the beginning of each end step, if a creature card left your graveyard this turn, target Phoenix you control deals damage equal to its power to any target.
Whenever another Phoenix you control dies, you may cast this card from your graveyard.
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.