Does Rin's Extra Action still have the power to proc on itself? Because, if it still does, then I can see her being used for a lot of teams for this very reason, almost to the point that she could be considered a Disk One Nuke, which is actually quite funny when you remember who she's friends with...
Yes, she's very good, though the odds of proc'ing the Skill aren't reliable (I believe 32% at SLvl2). I think the power of that Skill is quite crazy, but it's for somewhat subtle reason -- while getting extra actions off, she doesn't suffer from
buff deterioration, so if you charge her up with someone like Keine (or Ran later on, if she's the same as in LoT1), she can get off a crazy string of boosted spells in a row.
It's also insane that two of her Spells can DBF, so you can string off a progressively stronger attacks all while softening up your enemies for the rest of your team.
What's more is that she has a Skill that buffs up her stats for killing enemies, so if she's getting a nutty combo off on floor trash (or bosses that summon or come with minions, etc), she can buff herself all-around while getting off.
Finally, it's worth noting that she can duplicate ALL actions, not just her Spells. This includes Attack and even
Focus, so if you get lucky, you can restore your entire MP bar in one action.
In conclusion, she's a high variance character with very good tools and utility, and seemingly above-average formulas. The Skill in question seems to be extraordinarily fun, which is why she's a part of my main team at the moment, and she's certainly living up to the expectation.
