Board Thread:Questions and Answers/@comment-25420561-20140914175329/@comment-10271969-20140914181048

Yes, you can encounter pure again. ANY fallen that is 21 or higher (doesn't matter if you defeated it before) can give you the chance to encounter pure again. The chances of encountering pure  stays the same--so it's all based on luck really.

I hope that helped in clarifying it for you :)

Also...I know it's technically called 'reversed' but 'fallen' just sounds so much better to me. So I'll just refer to it as 'fallen' anyway. Lol