If I am using a Tornadus,I would use a mixed attacker with 56Attack/252SpAttack/200Speed with a Hasty/Naive nature and the moves are:
1.Hurricane(120 Power Special Flying Type Move)
2.Superpower(120 Power Phyisal Fighting Type Move)
3.U-Turn(70 Power Phyisal Bug Type Move)
4.Taunt or Rain...