The Lich

When you have no opponents, you win the game.
Split Second - Turn The Lich face up: Exile target
nonland permanent from a graveyard. Put a copy
of it onto the battlefield under your control. It
has Hexproof. As long as that permanent remains
on the battlefield, you have "If a source would
deal damage to you or to a planeswalker you
control, prevent all but 1 of that damage."
Rest never comes to the dead