Here's my plan.

We've never been able to make good use of Manaflare. Let's start this fight by trying to kill Shuriken really fast by moving her north one space, attacking with Araches/L33tz4n and Furious, then making her Fo'shizzle herself. Next we get Araches/L33tz4n under dead Shuri and put another dead body beside her. While we're doing this, we Poison the Succubus, and once Solstice uses Legacy, Manashackle him. He'll either use his Dispell or taken massive damage. Once his Dispell is spent, we Manaflare Araches/L33tz4n and use her to take out everything in a lightning storm of MADNESS.

This could work, if we distract Rad by giving him plenty of targets on the other side of the battlefield. We need to keep a healer alive, however, since our enemy has enough spells to kill us from a distance. If we heal Araches after Solstice uses Slay, he CAN'T beat us. We also need to kill the Succubus ASAP, so if any fighters are in good position to attack it they can go kamikaze and take it out. Rad's only good move against us would be to raise and hypnotise one of the dead bodies in our shield, but fortunately using Lightning and attacking would kill anyone he revived.

Carry the battle to them. Don't let them bring it to you. Put them on the defensive. And don't ever apologize for anything.

(Most of the credit for this plan goes to Risp, btw. Thank you, Risp, for making me look and sound smart.)

EDIT: We should use Antimagic on Shuri, not kill her. =b We just can't let her get hypnotised. That would be bad.