Shadow Mend (Pyroak): 20 HP restored, 14 energy
Chill: Restores 12 energy
Crit (1-625): 4285/10000
Burn (1-1000): 104/10000
Flamethrower (Shaymin): (9 [BP] + 3 [STAB] - 3 [Stat Dif] + 2 [Expert Belt] + 3 [Sun]) * 1.5 = 21 damage, Shaymin is burned for 6 actions, 6 energy
Crit (1-625): 1024/10000
Weather Ball (Shaymin): (10 [BP] - 1.5 [Stat Dif] + 3 [Life Orb] + 3 [Sun]) * 1.5 = 22 damage, 2 recoil, 7 energy
Targets: 2/3, 2/2
Crit (1-1250): 9928/10000
Air Cutter (Cyclohm): (6*0.75 [BP] + 4.5 [Stat Dif]) * 0.67 = 6 damage
Crit (1-1250): 1125/10000
Air Cutter (Ninetales, Critical Hit): 6*0.75 [BP] + 3 [Stat Dif] + 3 [Crit] = 11 damage
Air Cutter (Pyroak): (6*0.75 [BP] + 4.5 [Stat Dif]) * 1.5 = 14 damage
Shaymin suffers 2 damage for the burn
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Chill: Restores 12 energy
Crit (1-625): 329/10000
Heat Crash (Shaymin, Critical Hit): (12 [BP] + 3 [STAB] - 3 [Stat Dif] + 3 [Sun] + 3 [Crit]) * 1.5 + 4 [Charcoal] = 31 damage, 7 energy
Crit (1-625): 1674/10000
Flame Burst (Shaymin): (7 [BP] + 3 [STAB] - 3 [Stat Dif] + 2 [Expert Belt] + 3 [Sun]) * 1.5 = 18 damage, 5 energy
Crit (1-625): 8039/10000
Flamethrower (Shaymin): (9 [BP] - 1.5 [Stat Dif] + 3 [Life Orb] + 3 [Sun]) * 1.5 = 20 damage, 2 recoil, 7 energy
SpD drop (1-1000): 4270/10000
Psychic (Pyroak): 11 [BP] + 4.5 [Stat Dif] = 16 damage
Shaymin suffers 2 damage for the burn
Sun for 4 more rounds
Target: 2/3
Vexating Aroma (Cyclohm): The affected Pokemon takes 15 damage and will lose a cumulative 5 damage per action. Vexating Aroma is cancelled if the affected Pokemon has 90% HP or more at the end of an action (before Vexating Aroma damage, but after everything else)
Withering Miasma (8): Everyone's maximum energy is reduced by 48