I did my mage job change quest in CB1 and did a cleric one in CB2. I heard that they've made it easier in CB2, but that's just a rumour so I'm not sure if it will affect my opinions, but I think it's harder than the cleric one. Like Belaslav said, scrolls + pots/stones and you should be good. Took me 4 tries to get it right on my mage (for the first time) and I only used 1 SP pot on my cleric. >_>"
However, you've done a cleric job change before, so you'd know exactly what to expect, so it probably wouldn't be so hard for you. Just make sure you bring as many pots as you can and you'll be good.
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