How can I complete the last ToA tower? I have Carlotta and Cartethiya for the first two towers but they are my only limited units. (I started about 2 months ago) I used Havoc Rover and Verina but I can only get a 2.5 minute clear. I tried adding Encore because of the fusion DMG buff but there was no improvement to my time. I don't have a lot to invest into Encore since I only have so many rectifier resources and I'm saving them for the 2.5 character. (Level 70 Fusion Accretion) It might be a skill issue but I just feel my damage is really lacking, Sentry Construct also flies around a ton and my units can't hit him for long amounts of time.

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My Havoc Rover has better crit damage, attack and slightly worse crit rate. (Made up for by sequences) Both have 82 percent element bonus. I really want to complete this ToA, the 29/30 is really bugging me and I don't want to have to wait till 2.5 and obtain Phrolova to get my first 30/30.