Isgard's Discovery

Flash
{t}: Tap up to 8 artifacts you control. Those artifacts don't untap during your untap step as
long as Isgard's Discovery is on the battlefield.
Create a Legendary artifact creature token named Isgard's colossus with: "Isgard's colossus power
and toughness are equal to the amount of tapped artifacts you control" and trample.