Mazzera, Progenitor of Hatred

Ambition, flying, trample
(As an additional cost to cast this spell you may
sacrifice X creatures. If you do this spell costs X less.)
Whenever Mazzera, Progenitor of Hatred deals
damage to an opponent that player discards their
hand.
"Hatred consumes everything like fire leaving nothing
but ash in the wake of those who sparked the flame."