This ally is a real god-send for mono-sphere decks, especially those lacking in the defense departments like some Spirit or Leadership decks. Not only can it quest (perhaps with a little help from Visionary Leadership) or defend, but it can also eat an undefended attack (or two), letting us putting to better use our heroes/allies actions in the combat phase. I would always try to include it in a mono-sphere deck (and it can also find space in some Song two-spheres deck I guess)