Yuffie lunges at the unsuspecting Tifa and grabs the Materia, though she can's pry it out of her hands, she activates it then. Tifa grows another 200 pounds. Tifa is now at about 360 pounds, and trying to get Yuffie bigger than her, casts the spell again, making Yuffie grow to 500 pounds. The two continue fighting, though not all with WG2 spells, untill they reach 700 pounds, 760 for Tifa, And then--