Crystal, Inhuman Princess {1}{R}{G}
Legendary Creature — Inhuman Noble Hero
Identity
Ink-Treader
EDHREC rank
#11,507
Cheapest printing
US$0.45
TCGplayer
Printings
3
Flying
Whenever you cast a noncreature spell, Crystal deals X damage to each opponent, where X is the number of colors that spell is.
{T}: Add {R}, {G}, {W}, or {U}.
Keywords: flying
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.