This fight is incredibly RNG heavy. This strat is the best I can come up with to circumvent and minimize the RNG as well as lower the entry for a level pet.
Please do not attempt this with any other Nether Faerie Dragon breed, it WON'T work. You NEED S/S or S/B breed or Sprite Darter Hatchling.
This should work with ANY Snail, but I used Scooter (his high HP helps alot) so I can't confirm. Please do not use a Mechanical type for your level pet.
At least one of the pets for this strategy require the use of a specific breed.
You can use this strategy to carry a level 1 level pet to give it experience.
The strategy offers a TD script that can be used with the TD Script addon. You can copy the script by clicking on the button to the left of the pets.