Possibly my bulkiest pokemon!
Nature: Bold (+Defense, -Attack)
EVs: 150 HP, 100 Sp. Attack, 160 Defense, 100 Sp. Defense,
Ice Beam (Gets all of those Dragon types)
Calm Mind (Lugia's bulk provides a wonderful sweeping oppurtunity)
Recover (Erm.. do I really have to explain?)
As you can see, this Lugia is meant to outlast Special Attackers, and then utterly destroy them. I'd suggest starting off with Calm Mind, then you can do your thing. SWEEP