Commander of Darkness tooltip is incorrect

This is a minor quibble, but one of my favorite things about PoE is that you can know exactly what an effect does based on its tooltip.

Commander of Darkness reads (excerpted):
"You and Allies affected by your Aura Skills have +20% to all Elemental Resistances."

The bonus resistances and damage only apply to your character while she is affected by her own aura. That's probably a fair way to do things, but it's not what the skill says.

The way this is written, the sentence has two subjects: "You", and "Allies affected by your Aura Skills". The bit about aura skills has nothing to do with the first part of the sentence.

To see why this matters, you can split a sentence with a compound subject into two smaller sentences with individual subjects, simply by removing the 'and':
"You have +20% to all Elemental Resistances."
"Allies affected by your Aura Skills have +20% to all Elemental Resistances."

By this wording (and, consequently, by the actual wording of the skill), it's clear to see that the Necromancer in question should not have to have an aura on in order to gain the benefits of the passive.

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TL;DR

The tooltip is presently inaccurate and should read:
"You and Allies have +20% to all Elemental Resistances while affected by your Aura Skills."