This is the list of all the current core sets in Game of War.
Core Sets are immensely powerful when the secret recipes are followed. They receive an extra bonus that is not easily matched by making custom cores (assuming you have high set research) when you follow the secret recipe exactly.
Game of War Core Set Secret Recipes
Cronus – Cavalry, bigger attack, less TDD than Luna (powered)
Aether – Split, big type defense/health, wonder
Rhea – Ranged, type defense debuffs, siege DD
Nian – Split, big defense/health, wonder
Styx – Infantry, type defense debuffs, siege DD
Luna – Cavalry, type defense debuffs, siege DD
TheLegend27 – Split, wonder cores.
Aura – Ranged, type defense debuffs, siege DD
Atlas – Split wonder core – huge type defense and type health.
Perses – Infantry, type defense debuffs, more TDD, siege DD
Hera – Split wonder core
Bacchus – Cavalry, type defense debuffs
Artemis – Ranged, type defense debuffs
Hephaestus – Split, wonder set
Nike – Infantry, type defense debuffs
Apollo – Split, big Attack Debuff
Ares – Cavalry Attack
Poseidon – Ranged Attack
Hades – Split
Zeus – Infantry
Dread Captain – Mixed, Cav splash
Frostbitten – Cavalry
Dragon Bone – Ranged
Ryujin (Fisherman) – Infantry
Dragon King – Ranged
Ra (Scorching) – Cavalry
Odin (Ethereal) – Infantry/Cavalry
Four Horsemen – Split, high debuffs
Emeral Dragon (Viridian) – Split
Orion (Ascended) – Infantry/Ranged, high attack debuff