Blizzard Mage

Flash, encore (At the beginning of your end step you may exile this permanent, if you do return it to the battlefield at the beginning of the next upkeep.)
When Blizzard Mage enters the battlefield tap all creatures you do not control, those creature do
not untap until the beginning of their owner's next untap phase.
"There is no escape from his winter."- Journal of a Fallen Soldier