I continued riftwalker and channeller guild quests and in addition collected 500 rift sparks, so that I could name my entity:

Bind rift entity: #
You are done with the chant.
You utter the magic words 'asaelan ambihtere'
You succeed in naming your entity 'Ilmaotus'.

Blow them down quest for the air entity is also done:

You watch with self-pride as your rift pulse hits Lion.
A dazzling spark races along the stream of green light between you and Lion!
Your entity appears to glow for a brief moment. Multicoloured bands of energy repeatedly
flow from the tip of its head, down the full length of its body, and fizzle out when they
reach its feet. After a few seconds the magical display comes to an abrupt halt. You sense
your entity is stronger!
Congratulations! You have just completed 'Blow them down'
Air entity control will now break when an offensive spell hits, not when you begin to cast.

On the channeller side, I did the One ton golem and The slap (tm) quests.

As the rift spark collection and the air entity quest were taking quite some time, I haven’t casted channeller spells that much and I don’t have blue energy aura yet, but that is next on my list.