Nidhog, Dragon of Death

Flying, Infect, Hexproof
{b}{b}: Regenerate Nidhog, Dragon of Death.
When Nidhog, Dragon of Death attacks, you may
pay {b}{b}{b}. If you do, destroy target creature
your opponent controls.
Hope?! Hope is gone! Our only chance now is to run,
hide, and pray he does not spot you.