Scrayx, Eternal Savant

Haste, Doublestrike
When Scrayx, Eternal Savant enters the
battlefield or attacks, exile target sorcery
or instant fromyour graveyard. You may
pay 5 life and cast it this turn without
paying its mana cost.
Scrayx, Eternal Savant gains +1/+0 until end of
turn for each instant and sorcery you have cast
this turn.