Prismari, the Inspiration {5}{U}{R}
Legendary Creature — Elder Dragon
Identity
Izzet
EDHREC rank
#3,989
Cheapest printing
US$3.20
TCGplayer
Printings
3
Flying
Ward—Pay 5 life.
Instant and sorcery spells you cast have storm. (Whenever you cast an instant or sorcery spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
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.