Baltz, Vengeant Crusader

Lifelink, hexproof from black
Whenever you gain life, you may pay {r/w}{r/w}. If
you do, Baltz Vengeant Crusader deals that
much damage to target creature or planeswalker.
If a black permanent dealt damage this way
would be put into its owner's graveyard this
turn, exile it instead.
"Their kind have taken the lives of my people before.
It seems they did not learn from their folly."