[Trinity] is a great support that can utilize her entire kit to become almost unkillable. We don't choose a subsumed ability in this set as her kit already deals with the majority of content but any support ability is a good choice.

Fire Blast allows you to support you team with armor stripping. Spellbind gives your team protection from status effects. Anything else is a good option depending on what content you're doing.

Well of Life or Link is chosen to be replaced for subsumed abilities. Link will cause you survivability and Well of Life will cause you to lose cheap healing.

[Enemy Radar] mods help you and your team to find enemies. The nature of this build sometimes forces you to track down stragglers.

Duration is reasonably high for Blessing and Link. It has negative synergy with Energy Vampire but that's what you [Sacrifice] in this build.

Efficiency doesn't need to be any higher than 100% as Energy Vampire will give you all of your energy back anyway. [Flow] isn't run because of the Energy Vampire synergy but if you use a different augment you can replace a bit of range or duration for it.

Strength doesn't need to be any higher than 150% for a max Blessing buff. [Blind Rage] could be run to give you more burst energy from Energy Vampire but usually isn't necessary if you just kill the enemy.

Range is boosted for Link and Energy Vampire even if it does nothing for Blessing. One of the sacrifices for a hybrid build.

[Rolling Guard] and [Adaptation] allow you survive against extremely high level enemies by stacking your damage reductions and shield gates.

[Vampire Leech] is a great augment but it can be replaced with any of the other augments to suit your playstyle.

Arcane Aegis combines with your general tankiness and shield gating to make you nearly invincible. If you don't like the RNG or don't need even more survivability you can replace it with any of the offensive arcanes.