Vel'Koz, Eye Of The Void

Flying, Hexproof -Flashbacked sorceries have Flash.
(Whenever you cast an instant/sorcery put a Survey
counter on Vel'Koz; remove 3 Surveys, draw 2 cards.)
{3}{p/u}: Tap target creature, untap Vel'Koz.(per turn.)
{t}{1}{p/u}: Copy a spell with 4 or less convr. mana cost.
{t}{2}{p/u}: Until end of turn, instant/sorceries in your graveyard have Flashback equal to their casting cost.
{t}{3}{p/u}{p/u}{p/u}:Copy all exiled instant/sorceries , remove
them from the g