Board Thread:Questions and Answers/@comment-76.216.250.156-20190706095333/@comment-36894054-20190710175359

Critical is GW Jeanne & Remix Gilles, the two combined will give you guaranteed crits. I often slot into support unless there are boost and/or turn reduction units available. Your core is going to be a skill chance/damage booster (Guna, Mercury, Xmas Meru, or Ruprecht depending on element) and a hitter, typically a high attack flurry. For Null most people use Algol. For others, I am not so sure (use 8* hitters so not as familiar with P7). Mordred could be a good choice for fire since her ATK increases with every hit. Used to use Asmodeus for water but Aristotle also has self boost and better base stats.

Other considerations, especially if not using EU to automatically get burst first turn, are turn reduction, burst gauge charge, and Overdrive. Djehuti is good as she gives ability turn reduction every turn. Kolga does the same but also icreases burst gauge charge rate. Burst on turn 1 is ideal but would be hard to do without Dagda. Being able to burst as early as possible is important, especially against lvl 7 bosses as they can wipe out your whole team in one hit.