Storming Portal

Whenever you cast a noncreature spell, draw a
card then discard a card for each other spell of
the same type you've cast this turn.
Exile a noncreature card from your hand: Exile a
card from your graveyard that shares a type with
the card you exiled this way. Until end of turn,
you may cast those cards from exile. Their mana
costs are reduced by {1} for each card of the same
type you own in exile. Activate this ability only if
you've not cast any spell this turn.