[Shovah32]

A weak flaming sword (3dmgx3 vrs undead, length 2, fire dmg) could do for the angels and commander harbingers would be great (although, as i said if you upgrade the fist angels and make harbingers commanders you might have to drop 1 harbinger). As is there is no reason to cast this spell unless you really need the seraphs magic skills.
If i had 144 astral pearls as marignon that would get me 2-3 well equipped angels of fury (rather than 1 unequipped seraph and some sucky troops).