Lashukath, The Everhungry

Lashukath, The Everhungry can't be countered.
Annihilator 3 (Whenever this creature attacks, defending player sacrifices three permanents.)
At the beginning of your upkeep, each player loses 5 life unless he or she sacrifices a creature.
{b}, sacrifice another creature: Regenerate Lashukath, The Everhungry.
Ph'nglui mglw'nafh Lashukath Zunyaka wgah'nagl apagrr