Quote Originally Posted by sanahtlig View Post
For Medusa, one strategy is layering 3-4 cleanses to stall as long as possible. Behemoth is 1, and Maiden's Prayer is 2. Mordred with Viccitudes of Fortune has fairly decent affliction resistance, making her a good candidate for Maiden's Prayer EX. Amon has an affliction protect, which can be useful for some teams. Another strategy is stacking so many damage abilities that the fight is over before Petrify can become an issue. But if you could do that, you probably wouldn't be here looking for advice.
I feel like you're glossing over the fact that Medusa also deals damage by using her petrifying ability which can also deal quite a dmg and as such it can also make you lose the battle. With Mordred(cleanse), you will have at max 25% def debuff if you have Diana, that is. (I somehow doubt ppl with Light Tsuku+Diana have a problem with Medusa unless underleveled.) Going full cleanse is fine, but I thought I should point this out.