The Mad King

When The Mad King enters the battlefield, you
gain X life and another player loses X life,
where X is the number of humans you control.
Madness {2}{b} (If you discard this card,
discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
"If you're going to bleed, then I'm going to give you
a reason to"