Mr. House, President and CEO {R}{W}{B}
Legendary Artifact Creature — Human
Identity
Mardu
EDHREC rank
#6,099
Cheapest printing
US$1.56
TCGplayer
Printings
4
Whenever you roll a 4 or higher, create a 3/3 colorless Robot artifact creature token. If you rolled 6 or higher, instead create that token and a Treasure token.
{4}, {T}: Roll a six-sided die plus an additional six-sided die for each mana from Treasures spent to activate this ability.
Keywords: treasure
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.