Nick Valentine, Private Eye {2}{U}
Legendary Artifact Creature — Synth Detective
BlueCommander: legal
Identity
Blue
EDHREC rank
#11,093
Cheapest printing
US$0.26
TCGplayer
Printings
4
Nick Valentine can't be blocked except by artifact creatures.
Whenever Nick Valentine or another artifact creature you control dies, you may investigate. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Keywords: investigate
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.