Mr. Carroll's Domain

{t}: Add {b} or {r} to your mana pool.
{t}: Choose one. Add {b} or {r} to your mana
pool for each {b} or {r} mana you control.
{5},{t}: Sacrifice Mr. Carroll's Domain: Search
your library, graveyard, or exile for a card named
Demon Lord Carroll, put that card into your
hand then shuffle your library.