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Brilliant Ultimatum
{W}{W}{U}{U}{U}{B}{B}
Sorcery
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.

X
{U}{B}
Legendary Creature -- Human Spy
2/2
As long as ~this~ is in ~this~'s owner's opponent's hand, ~this~'s owner may cast ~this~ and activate ~this~'s abilities. That opponent can't cast ~this~ and plays with their hand revealed.
{U}{B}, {T}: Put ~this~ into target opponent's hand.
{3}{U}{B}: You may play a land or cast a spell from the hand ~this~ is in. If you cast a spell this way, you cast it without paying its mana cost.