Esir Avaz, Eldritch Arcanist

Esir Avaz costs {u}, {b} or {r} less to cast for
each blue, black or red instant or sorcery
spell you cast this turn.
Whenever you cast an instant or sorcery spell, you may draw a card and lose 1 life. If
you don't, Esir Avaz deals 1 damage to each opponent.