I'm playing an Eagle Shaman that took the 'acolyte of divine secrets'-feat to multiclass to Invoker.
Acolyte of Divine Secrets [Multiclass Invoker]
Prerequisite: Wis 13
Benefit: You gain training in Religion. Choose a 1st-level invoker at-will attack power. You can use that power once per encounter. In addition, you can wield invoker implements.
If I chose an At-will that has "Can be used as a basic ranged attack" rider, can I make use of that? Or does it lose that property once it is an encounter power?