Have leveled my team up to 19 and suddenly Buza seemed much easier. It's just a question of plodding through and surviving, so many battles here that Igot offered a free save!
Thats the thrid crystal collected so back to Gargutan to sell the loot and SAVE!
Now for that golumn, Judging from the amount of damage I was doing it seems to have around 20 - 25 thousand hit points, it took 44 rounds to beat it, 6 or 7 life stones, and more mana potions than I can rememeber. Memorable moment : My bishop receiving a critical hit for well over 3000 hit points, more than twice his max !
I still managed to beat it first time, used plenty of miasma spells and the lightning power up for my team so even the magic users could hit or over 100 if not healing the team. Important - when you beat it run away and save your game !
Good luck