The Portals of Manstaru

If The Portals of Manstaru is in you opening
hand you may play it without paying its mana cost
When you play the Portals of Manstaru scry 3
{t}{1}: scry 4
{t}{1}:draw one card
{t}: exile a permanent in till the Portals of
Manstaru leave the battlefield
{5}: untap The Portals of Manstaru
They are portals of infinite possibility