Banner of the World Dragon - Does this work.... (need help!)

[Quannum]

Ok so I was thinking of putting the BotWorldDragon on a BSB who goes with an Archmage in a bunker of Phoenix Guard.

I understand that I can't cast spells on said unit due to the Banner, but can my Archmage cast Throne of Vines on HIMSELF, as it is a spell that doesn't affect the unit?

I can see an argument either way - once the Archmage joins the PG, he counts as part of the unit I assume.

What do you guys think?

Q

[Bolt Thrower]

I believe he is considered part of the unit and therefore needs to be affected by the banner for good or bad. Think of an enemy casting a spell that can pick out a single character (ala burning iron from 7th). By the logic presented this could be done because he is not part of the unit. Unfortunately, this is one of those can't have your cake and eat it too moments.

[Quannum]

Ok cheers mate! Thought as much...