Timer to Destruction

{1},{t} : End the turn. Then a random opponent
who hasn't gained control of Timer to
Destruction does so.Activate this ability only
during your turn. (Exile all spells and abilities on
the stack. Discard down to your maximum hand size. Damage wears off, and "this turn" and "until end
of turn" effects end.)
When each player has gained control of Timer to Destruction, sacrifice it. Destroy all nonland permanents.