After creating his core Axel succeeded in advancing to Sky level.
"Well Axe congrats"
"Thanks"
"You are now a Sky level cultivator"
Smiling happily Ethan congratulated his friend.
Cores are made by two things, a cultivator's element and technique. The more techniques and elements a cultivator has the more core he can have.
Axel has one element but two types of it, one is his innate flame the Ancient flame and the other is his bestowal flame the sacred flame. His core was made by two types of flames and techniques making it more powerful than others.
"Well then you should stabilize your realm first you just advance after all"
Axel nodded at Ethan's words and sat cross-legged on the ground.
"Well, what are we gonna do with those?"
Laima asked pointing to the boulders that were flying towards them.
"Well I have an idea from Axel's move while he was advancing"
