1) That one's pretty damned easy, Bob. All she'd have to do is stall. Black Mage would be ousted from power within a few minutes, and all he'd have left to throw at her would be Hadoken, which her backup shields could fix instantly.
I have no idea how to combat the other two, however. I've never read any of the Dragonlance books, so you're gonna have to give me something to work with.
If either of those characters is invincible or immortal, I already banned them from this battle. They have to have some form of weakness, and it can't be a Superman's "Kryptonite," Deus Ex Machina thing either.