Attune Eidolon

You attune to a specific Eidolon, paying the attunement cost (if applicable) and then activating its Passive (if applicable).  You gain its Channel Eidolon, Summon Lesser Eidolon and Secret Art: Summon Eidolon abilities provided that you have advanced enough in this class to get them.

You may use this as an Encounter Start ability without paying an AP cost.