Step 1
Mr. Mime used Dazzling Gleam! -3EN
Crit (10, d240): 73 (No)
(8+3+2+(8-7))+8 = 22 DMG
Mr. Mime hurt itself in confusion! -11HP
Xerneas used Thunder! -3EN
Hit (192, d240): 51 (Yes)
Crit (10, d240): 43 (No)
Effect (144, d240): 17 (Yes)
(11+(9-9)) = 11 DMG
Xerneas hurt itself in confusion! -6HP
Mr. Mime was Paralyzed!

Xerneas absorbed some nutrients! +3HP
Round Summary

HP: -22-6+3 = -25

EN: -3

HP: -11-11 = -22

EN: -3