Iris, Sorcerer Warlock

Whenever you cast an instant or sorcery spell,
each opponent loses 3 life.
Instant and sorcery spells you cast cost {1} less to
cast.
At the beginning of combat on your turn create a
1/1 black Nightmare creature token with flying
and 'this creature cannot be blocked'. Exile it at
the beginning of your next upkeep.
{b}{b}{b}, {t}: Iris, Sorcerer Warlock deals 2 damage
to each creature you don't control.