Krivar, Merciless Brute

First strike, Deathtouch, Menace
Other Vikings you control get +2/+0.
{1}{b}{r}, {t}, Tap five other vikings you control, sacrifice a vehicle, and put a -1/-1 counter on Krivar, Merciless Brute: Destroy all creatures and planeswalkers you don't control. Activate this ability only any time you could cast a sorcery.
"Death to all who oppose me"