From the Backstory: Linaniil realises that her own power won't be enough to keep the enclave of mages she's planning safe from the Ziguranth, even though she can slaughter them with impunity personally. What does she do? Goes and steals the power of one of the gods the Sher'tul killed, so she can set up defenses that will work and have enough power. Everyone else who ever messed with this level of Sher'tul tech has died or worse.
The same incident gives a massive one to the general of Elvala, an immensely powerful Arcane Blade. Linaniil sought him out for backup for the plan, not to protect her, but to kill her if she went crazy. It wouldn't have worked, but that's only because she underestimated the powerup involved. And he may have prevented that by killing the horrors that showed up to drag her off.