Malcolm, Keen-Eyed Navigator {2}{U}
Legendary Creature — Siren Pirate
BlueCommander: legal
Identity
Blue
EDHREC rank
#3,212
Cheapest printing
US$0.30
TCGplayer
Printings
4
Flying
Whenever one or more Pirates you control deal damage to your opponents, you create a Treasure token for each opponent dealt damage. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Partner (You can have two commanders if both have partner.)
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.