okay so if your pikachu knows iron tail you want to use that. axew is useful, but is weak to most of kyrum's attacks, so consider focussing most of your healing on axew, especially since if it dies, you loose. dual chop and dragon claw are super useful suppereffective attacks. your pikachu should be supporting most with orbs and other items, since it has the least type effectiveness against kyurem. use both defensive and offensive orb types, and remember not to try to give it status conditions. hope this helps.