The Blue Spirit {3}{U}
Legendary Creature — Human Rogue Ally
BlueCommander: legal
Identity
Blue
EDHREC rank
#7,322
Cheapest printing
US$1.20
TCGplayer
Printings
2
You may cast the first creature spell you cast each turn as though it had flash.
Whenever a nontoken creature you control enters during combat, draw a card.
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.