I'm guessing the opener will be something like this?

Twinblade skill with 2 charges (40s cd), applies a 20s debuff
oGCD: 2 min cd to get a free Reawaken
Twinblade attack that gives +10% dmg buff
Twinblade attack that gives +10% haste buff
(Raid buffs go out)
Reawaken combo (lasts 13s)
Twinblade combo (to reapply debuff before it falls off)