Pneumaturgic Ontologram

You may cast Aura spells without valid targets. When you do, exile the Aura as it resolves and
the next time a valid target for it to enchant
would enter under your control, put this Aura
onto the battlefield from exile attached to that
permanent. If you do, draw two cards.
{w/u}, Pay 2 life, Discard a card: Your life total
can't change until end of turn. Draw a card.