a good strategy for intense is before the battle make sure you have at least two super potion and then save as close as possible to the Madelis battle and then check the ability, if its unnerve go ahead, if not soft reset (due to one of Houndoom's abilities being early bird), but if it is unnerve go ahead and sing and then if your lucky the Houndoom will stay asleep for 2 turns and use the first turn of sleep (if the Houndoom didn't use nasty plot, if it does use nasty plot, soft reset) to heal with the super potion, and then the second turn of sleep, use metronome as its most likely to give you a better move then ancient power, but if you want to go for those boosts, go for it, and yeah either metronome will win you the game with something like a hydro cannon or a head smash crit (head smash doesn't kill on it's own) and yeah, this strategy worked for my friend and not me because i used my super potions early, but yeah this strategy is a completely luck based one, sooo good luck