Step 1
Serperior used Bullet Seed! (-7 EN)
Hits (1 - 2: 2, 3 - 4: 3, 5: 4, 6: 5): 1 (2 hits), Crit (1, 2d24): 9, 23 (No)
(3 + 3 + (6 - 12))*1 + (3)*1 + 2 = 5
Porygon2 used Ice Beam!
Crit (1, d24): 9 (No), Frost (1, d10): 10 (No)
(9 + (8 - 4) + (2 - 3))*1.5 + (1 - 0)*4 = 22
Step 2
Serperior used Bullet Seed! (-7 EN)
Hits (1 - 2: 2, 3 - 4: 3, 5: 4, 6: 5): 3 (3 hits), Crit (1, 3d24): 19, 5, 15 (No)
(3 + 3 + (6 - 12))*1 + (3)*1 + (3)*1 + 2 = 8
Porygon2 was paralyzed and couldn't move!
(Porygon2's Paralysis Strain reset to 0)
Round Summary
HP: -22
EN: -7-7 = -14
EP: -5-8 = -13