Ruby, Daring Tracker {R}{G}
Legendary Creature — Human Scout
Identity
Gruul
EDHREC rank
#2,165
Cheapest printing
US$0.20
TCGplayer
Printings
2
Haste (This creature can attack and {T} as soon as it comes under your control.)
Whenever Ruby attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn.
{T}: Add {R} or {G}.
Keywords: haste
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.