Elsha of the Infinite {2}{U}{R}{W}
Legendary Creature — Djinn Monk
Identity
Jeskai
EDHREC rank
#6,862
Cheapest printing
US$0.23
TCGplayer
Printings
4
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
You may look at the top card of your library any time.
You may cast noncreature spells from the top of your library. If you cast a spell this way, you may cast it as though it had flash.
Keywords: prowess
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.