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)
White Tower Watchman
Ally. Cost: 3. 1 0 2 3
If each hero you control belongs to the same sphere of influence, you may assign damage from undefended enemy attacks to White Tower Watchman instead of a hero you control.
The watchmen cried aloud, and all men in the City stood to arms. The Return of the King
The Drúadan Forest #41. Neutral.
allies can't take undefended attacks — jvader 135
@jvader This ally is meant to do exactly that. — rezen 24