Rakdos Hellraiser

Vanguard (Whenever this creature attacks for the
first time each turn, after this phase, there is an
additional combat phase.)
At the beginning of each combat, you may tap
up to one creature an opponent controls, and
untap up to one creature you control. Those
creatures each get +2/-2 until end of turn.
There is always a more reckless member of the clan.