Oath of Vengeance

At the beginning of the game, choose another
player. That player becomes your Nemesis. If,
during combat, you attack a Player that is not
your Nemesis, but you do not also attack your
Nemesis, you lose this Oath at the beginning of
your next End-Step.
Creatures you control have Menace.
"I would even go through the nine hells to find you.
This I swear; You will know fear before the end."