Mob Overlord

Whenever a creature enters the battlefield under
your control, another target creature gains haste
until end of turn.
He refused to join the Gruul because they weren't
morbid enough. He refused to join the Golgari because
they weren't destructive enough. He refused to join the Rakdos because there wasn't enough money in it for
him. So he started his own 'guild' of sorts. Now he is morbid, destructive, and rich.