Nashi, Searcher in the Dark {U}{B}
Legendary Creature — Rat Ninja Wizard
Identity
Dimir
EDHREC rank
#9,388
Cheapest printing
US$0.26
TCGplayer
Printings
4
Menace
Whenever Nashi deals combat damage to a player, you mill that many cards. You may put any number of legendary and/or enchantment cards from among them into your hand. If you put no cards into your hand this way, put a +1/+1 counter on Nashi.
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.