As for what kind of attack Elena was going to use, she decided to go with one of her newly learned lesser concepts. The Sky Burning Sage was neither too strong nor too weak. So he was the perfect enemy to test this new move out.
The lesser concept that Elena was going to use was devouring. It was one of Elena's favourite lesser concepts so she was looking forward to seeing how useful it was going to be in a proper battle.
Using the lesser concept of Devouring, Elena cast a spell. The name of this spell was [Blackhole]. Blackhole was actually a very famous spell and many mages used it regularly.
But the real "Blackhole" was a spell belonging to the main concept of Gravity or higher main concept of Celestial. But Elena replaced those concepts with the lesser concept of Devouring. But function of this spell was still similar to the true "Blackhole" spell with an extra bonus of energy storage.