Sauron's Influence

Choose target creature. Gain control of that creature unless its controller discards cards equal to its mana value.
But they were all of them deceived, for another
ring was made. Deep in the land of Mordor, in
the Fires of Mount Doom, the Dark Lord Sauron forged a master ring, and into this ring he poured
his cruelty, malice and will to dominate.