Ice Age

Ice Age enters the battlefield with 3 time
counters. At the beginning of your upkeep,
remove a time counter from ice age. At the
beginning of your endstep, if there are no
time counters on Ice Age, sacrifice it.
As long as Ice Age is on the battlefield creatures
can't attack and their activated abilities can't be
activated. All creatures gain hexproof, and
opponents can't cast creature spells.