How do I get a Helio Dragon Egg?
Helio Dragon Eggs can be found in Level 8 Plains or higher and by purchasing an Ark of the Sands or Helio Egg Chest in the Shop.
There is a greater chance of acquiring a Helio Dragon Egg in higher level Plains. In other words, Level 10 Plains have a higher probability of dropping a Helio Dragon Egg than Level 8 Plains.
Important: You can only get a Helio Dragon Egg in a Plain by sending attacks with a Great, Wraith or Elemental Dragon. One of your Dragons must be present to acquire a Helio Dragon Egg.
Helio Dragon Eggs can appear in Plains you have already defeated, so feel free to attack the same Plains multiple times to increase your chances of finding an Egg.
Please note: It is not possible to acquire a Helio Dragon Egg without already having a Gaea Spring Outpost.