Leviathan.Comeatmebro said:
»They had better gear than you and 4 songs. That's it.
It gains evasion if you WS when it's not casting, but that's common knowledge.
There is no special super advanced tactic, a gjalldaubla brd just grants unlimitedish mp and a mnk with 4 songs and 7 min of SV can drop it in under 20 minutes.
To be more specific, it gains evasion the more often it uses Nature's Meditation, which has a high probability of being triggered when WS'd when it's not casting. It's the Nature's Meditation that causes its evasion to increase, not just weapon skilling it when it's not casting.