simple advise for using horse as pet in bursting:
make sure tht ure atkers spd is lower than 50

take note: wind horse spd lvl 1=54(correct me if im wrong)
fire horse spd lvl 1=57-59( '' )
earth horse spd lvl 1=52 ( '' )

heavenly bursting 3 fire 1 water

my fire mage gets 10k exp per battle(not 2x exp event and im using cattle as pet)
water gets around 20-30k exp per battle(also not 2x exp event)