Battlefield Bánánach

Lifelink, hexproof from white
At the beginning of your upkeep, sacrifice a
creature or planeswalker and you lose 3 life.
Madness {2}{b}{b}
"Can't say I'd want such a monster on my side, but
it's no picnic having it on the other side, either."
— Cu Chulainn, undefeated warrior