This fight was very easy the 2nd time.
Equip towels for a much easier fight.
Cliboe appears with three clones of himself, all capable of doing AOE's.
My strategy for this fight was to use as many aoe's as I could like toxic plant, blizzard, fireball and lava fall right away. The clones are much weaker than Cliboe and should dissipate after 2-3 rounds of aoe's. Make sure to use ameilorate , great healing spell with low gather cost.
You could also try to get off some five gather spells, but I found I always got hit before I could do the spell, causing me to lose gather and waste a turn.