Quote Originally Posted by Yolodesu View Post
Not necessary. Medusa can cast petrified multiple times in a row, a 8 turn cd immunity wont be really helpful if it happen. I would also be tempted to try Belphegor first as being said, since she will bring both debuff and stun extend (no special ability cast during stun = no petrified)
On top of that, Maiden's prayer in Ex skill slot, some friends with Phoenix for affliction resistance and he's good to go.

+ He said his only legendary soul was Andromeda, so i assume he didnt unlock Granuaile yet (and her ex skill isnt required if he goes with Belphegor).
Gawain is useless since Dike brings A frame debuff already.

Also why healer from another element only?
Avoid damage dealer for obvious reasons but as long as the kamihime provide interesting ability (heal/buff/debuff) its totally viable.
It is exactly why the immunity is valuable.
Under such stressful circumstance, resistance and purification are certainly useful but not enough, and what makes immunity superior is that it always works.
Another advantage is that, you can active immunity during the trash battle (as soon as the petrifying snake is killed), and earn time for cd.
Besides, Medusa's HP is very low, so the battle ends shortly (otherwise it often ends badly), which means you really dont need that many times of purification, just one or two nullification would make the difference.

As (one of) the most important thing in this game, a debuff of 10% doesn't make the 20% one useless, it should be the other way around.
Surely there are situations and tactics where the gauge control may work better, but in general, Gawin w/ Sniper Shot is kind like a standard if you have no SSR debuffer.