You can always gacha 2k do you not? Beside if you're really desperate you can call for CONRAD'S CURSE, it's Judgment day.
- - - Updated - - -
Done with the event, even with buff 3* the last map without Chydis or Bernice seem impossible after all, at least I got the RS Gonna farm 2 more Rosalie, doesn't have her in collection yet and healer is alway good to have, I haven't AWed Iris and Robert yet.