Honestly, the only viable build is that of EV with blessing. (This will also help link, a very good utility ability.) life drain is useless, I can heal more with a single use of blessing, and EV is simply too good of a power. (And can sometimes be a must have for power hungry frames like Vauban) So just focus on power strength and efficiency, and if you have a mod slot opened then slot in a continuity, or something like that for duration. ~[i]Sincerely, a Trinity main[/i]