Nnnga the Unforgiving

Deathtouch, Lifelink, Indestructible, Menace
Whenever Nnnga the Unforgiving enters the battlefield or attacks, each opponent that attacked you or targeted you with a spell or an ability last turn loses 7 life. You gain that much life.
{b}{b}{b}{b}, {t}: Target creature you don't control gains -12/-12 until end of turn.