Israr, Warlord of Sardor

When Israr, Warlord of Sardor enters the battlefield, create three 1/1 black Skeleton
Soldier creature tokens.
{2}{b}{b}, Sacrifice a creature: Put a creature card
with an army counter on it from exile onto the battlefield under your control.
Whenever a creature enter the battlefield under
your control from exile, you may draw two cards
and lose 2 life.