Let's discuss my strategy while making teams for the spiral abyss. I like to play teams that focus on dealing elemental damage or reaction damage. So, I always keep at least one anemo character in each team to benefit from Viridescent Venerer's elemental shred. This helps my teams to do better damage and shred enemies' resistance at the same time. Coming to Kazuha, I would say he's an excellent character who can shred multiple elemental resistances and provide multiple elemental damage bonuses. Although the duration for his buff is short, it still gives you a chance to perform massive burst damage attacks. Coupling him with Raiden Shogun, Sara, Bennett, or Mona can obliterate the enemy's health bars. I would highly recommend you wish for Kazuha if he re-runs because of his massive potential to fit into any elemental team composition.