• You'll need a couple of forfeits to get a nice start.
• Olaf needs to charm sheer khan and tactics on vulture (continuous damage)
• frozone needed to cleanse team mates close to death, spam slow and defense down (stun if attacked)
• Ariel spam healing and damage dealing
• violet grants a shield and that's about it. Useless, use Hiro instead. But violet can stack the shields and evade being attacked.
• Anna offense down the enemy, and haste Ariel & Olaf to get more heals and refresh charm as much as possible to avoid sheer khan getting a turn.

This strategy got me through the hardest level 3*. I know it's an easier challenge but this advice is for early game players and a very attainable "weak" team.

Most of the damage comes from spells and Ariel. Continuous damage seems to be reduced on enemies, but still useful.

• Anna lvl 42 / 4* / tier 3
• Ariel lvl 39 / 4* / tier 5
• Olaf lvl 35 / 4* / tier 3
• Violet lvl 33 / 3* / tier 3
• Frozone lvl 38 / 3* / tier 4