(All rolls assume the listed event takes place if the number rolled is LESS THAN OR EQUAL TO the probability.)
A1
Steelix used Heavy Slam!
Hit chance = ( 100 + 10 )% : HIT
Crit chance = 1/16 (rolled 9/16): NO
Damage = [ 4 + 2 * ( 8 - 2 ) + 3 + 6 - 4.5 ] = 20.5 Damage
Energy cost = 5 + ( 8 / 1.5 ) = -10.333... EN
Steelix's Taunt decays -1 stage: Taunted (4a)
Sableye used Will-O-Wisp!
Hit chance = 85/100 (rolled 23/100): HIT
Steelix was Burned!
-7 EN
Steelix is Burned!
-2 HP
A2
Steelix used Earthquake!
Hit chance = ( 100 + 10 )% : HIT
Crit chance = 1/16 (rolled 15/16): NO
Damage = ( 10 + 3 + 6 - 4.5 - 3 ) = 11.5 Damage
-7 EN
Steelix's Taunt decays -1 stage: Taunted (3a)
Sableye used Chill!
+12 EN
Steelix is Burned!
-2 HP
A3
Steelix used Heavy Slam!
Hit chance = ( 100 + 10 )% : HIT
Crit chance = 1/16 (rolled 6/16): NO
Damage = [ 4 + 2 * ( 8 - 2 ) + 3 + 6 - 4.5 - 3 ] = 17.5 Damage
Energy cost = 5 + ( 8 / 1.5 ) = -10.333... EN
EN KO: Steelix fainted!
The winner is Vanillish Wafer!
TL;DR
Sableye: -50 HP, + 5 EN
Steelix: -4 HP, -28 EN (ENKO)