Glow Fly

WARNING: When facing these creatures, it is vital to kill/disable them before they can hit you. With the exclusion of Evolution, who can restore herself by transforming, and Radiation immune units, this creature's default attack will inflict a status effect which will drain the target's mana, and once the unit's mana reaches 0 it will then start PERMANENTLY lowering the targets max HP, with no way of regaining the lost stats.

This nasty passive also fully restores a GlowFly's mana, with which they'll use a similar mechanic to the MushroomCore boss. They can Replicate using 10 mana and half their HP to create a token copy of themselves with 0 mana. Combined with the above passive and Regenerate, you'll be swarmed by semi immortal bugs if you can't take them out fast enough. Large scale attacks like MeteorStorm or Tsunami are advised. Having a Radiation immune team will slow down their growth in numbers, since Dissolve only restores their mana if they can successfully inflict Radiation.