Jacobius Guinterland

When Jacobius Guinterland enters the battlefield, roll a 6-sided dice. If it lands on a 1, create ten +1/0 engineering student minions. If it lands on any other number, scry 1, draw 1, and then solve for the area of a circle, where r is the number you rolled. If you cannot solve in less than 10 seconds, all nonland permanents are destroyed.