*Cough*
I'd prefer another method, but I'm thinking about SE here. Plus 5min is nowhere near short enough. Our buffs have a short duration, made shorter if your casting in full +enh set (vs full emp). Accession is on a 2min timer and is ready ~right now~. And while I would prefer a JA on a 3min timer, knowing SE they would make it 10min and only work on a few spells.Those spells should be usable with accession or have some other method for a RDM to make them aoe. You allow BLU to aoe their spells to party members, you should allow RDM to do the same.
And on a side note, why in the heck would you go /BLM just for stun? ES is a joke, as are the ele DoT's. Go /DRK, you'll get stun, absorb line, ABII, SE LR and access to Vorpal (if you don't have CDC). /BLM used to be about ES Sleepga for certain BC's, but now you'd just use a BLM anyway.