Bahn Gheshin

Protection from black and from red
Whenever Bahn Gheshin deals damage to a black
or red creature, destroy that creature.
At the beginning of your upkeep, if your
opponents control no black or red creatures, you
may exile Bahn Gheshin. If you do, exile all
black and/or red cards from all graveyards. You
gain 1 life for each card exiled this way.