Rosheen, Roaring Prophet {2}{R}{G}
Legendary Creature — Giant Shaman
Identity
Gruul
EDHREC rank
#14,413
Cheapest printing
US$0.17
TCGplayer
Printings
5
When Rosheen enters, mill six cards. You may put a card with {X} in its mana cost from among them into your hand.
{T}: Reveal any number of cards with {X} in their mana cost in your hand. Add {C}{C} for each card revealed this way. Spend this mana only on costs that contain {X}.
Keywords: mill
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.