Keral, Doomguide of Kelemvor

Whenever a creature an opponent controls dies,
return to your hand target creature card in your
graveyard with equal or lesser mana value.
{w}{b}{t}: The next time a source of your choice
would deal damage to a creature you control
this turn, prevent 3 of that damage. If damage
is prevented this way, that source's
controller loses 3 life.
"I'm not going to lose anyone else"