Danny Pink {3}{U}
Legendary Creature — Human Soldier Advisor
BlueCommander: legal
Identity
Blue
EDHREC rank
#2,718
Cheapest printing
US$20.42
TCGplayer
Printings
4
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Creatures you control have "Whenever one or more counters are put on this creature for the first time each turn, draw a card."
Keywords: mentor
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.