Alandra, Sky Dreamer {2}{U}{U}
Legendary Creature — Merfolk Wizard
BlueCommander: legal
Identity
Blue
EDHREC rank
#2,515
Cheapest printing
US$8.57
TCGplayer
Printings
2
Whenever you draw your second card each turn, create a 2/2 blue Drake creature token with flying.
Whenever you draw your fifth card each turn, Alandra and Drakes you control each get +X/+X until end of turn, where X is the number of cards in your hand.
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.