Duck Dog, Death's Harbinger

Indestructible Deathtouch Haste Defender When Duck Dog, Death's Harbinger enters
the battlefield deal 20 damage to target planeswalker
{10}{10}Sacrifice Duck Dog, Death's Harbinger destroy up to 3 target players
"Just the sight of it has made many go mad,
Even I fear it." -Nicol Bolas, Dragon God