Incapacitated abilities do not qualify as "powers". Have Absolute Zero, Ra, and Tachyon against Ambuscade in Insula Primaris. Absolute Zero's equipment allows him to heal from fire damage, Ra's ongoing gives him immunity to fire damage. Tachyon's Synaptic Interruption allows you to choose which villain or hero to redirect damage to. As soon as the volcano appears, it will be easy. Also consider using Wraith for her Smoke Bombs. With the DLC, fight The Dreamer with Legacy, Omnitron X, and Ra in Megalopolis. Omnitron X is very useful with his plating and ability to heal teammates and damage foes with effects that are not powers. Legacy and Ra boost Omnitron's damage. You can also take Wraith instead of Ra for damage reduction and redirection; or Tempest to have another hero with ongoing damage resistance and incapacitated power.