Temujin, Lord of the Steppes

Whenever a creature enters the battlefield under
your control, it gets +1/+1 until end of turn.
Whenever a creature an opponent controls dies,
if it was dealt combat damage by a creature you
control this turn, exile it instead.
You may cast creature spells exiled with
Temujin, Lord of the Steppes. If you do, they
gain haste and are exiled at the beginning of the
next end step.