My Assimilation Aegis has Exiled -Haughty Djinn- several turn ago.
In my First Main, I transformed Restless Anchorage in "the" Blue Bird.
I Attached Assimilation Aegis on Restless Anchorage/Blue Bird.
Restless Anchorage/Blue Bird become a Haughty Djinn but remain with the Power and Toughness of the Restless Anchorage (remain 2/3 but I've 6 instant/sorcery in the graveyard).
At the end of the turn, Pow/Tough of the Restless Anchorage/Blue Bird becomes 6/5.