Galazeth Prismari {2}{U}{R}
Legendary Creature — Elder Dragon
Identity
Izzet
EDHREC rank
#5,618
Cheapest printing
US$0.37
TCGplayer
Printings
5
Flying
When Galazeth Prismari enters, create a Treasure token.
Artifacts you control have "{T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell."
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.