Xarx, The Endless Assault

Flying, Trample
On your end step, if at least two demons you
control have died this turn: Grant your
opponent's creatures -1/-1 for each demon you control.
{3}{b}{b}: Ascension—Discard the top card of your
deck. If the discarded card has an odd converted
mana cost, Summon three 4/3 black demon
tokens with flying.