Kaza, Roil Chaser {U}{R}
Legendary Creature — Human Wizard
Identity
Izzet
EDHREC rank
#9,000
Cheapest printing
US$0.23
TCGplayer
Printings
5
Flying, haste
{T}: The next instant or sorcery spell you cast this turn costs {X} less to cast, where X is the number of Wizards you control as this ability resolves.
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.