Time Loop

When Time Loop enters the battlefield,
it loses all abilities until end of turn.
-Whenever a card would be put to a graveyard,
instead exile it until this leaves the battlefield.
-At the beginning of each end step, each player's
life total becomes their life total at the start of
that turn. Exile all nonland permanents that
entered the battlefield that turn, then each player
puts all cards they own exiled with Time Loop to
the bottom of their libraries in any order.