
Exile the top five cards of your library. An opponent separates those cards into two piles. You may play lands and cast spells from one of those piles. If you cast a spell this way, you cast it without paying its mana cost.
Brilliant Ultimatum has 1 printing, first in Shards of Alara (2008). EDHREC ranks it #12,667 among Commander cards. It appears most in The Celestial Toymaker decks (2,418 on EDHREC). It has 6 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.