"Thieving bastard, return my world!" Magister said in anger as hundreds of magic circles flashed behind him, powering up in response.
In response, his opponent, a white-robed individual calmly condensed a sword, making a gentle slash to sever all the magic circles, "Give up, Magister. Cultivation is supreme. Magic is inferior."
"Delusional!" Magister said as he spun his cane once, condensing a gigantic magic circle with a dozen concentric circles inside, filled to the brim with runes as he unleashed a beam of mana onto the nearby world.
Immediately in response, the Spiritual Energy that had encroached upon that world was devoured by a tree that had appeared, converting it into Mana.
The tree grew to a height of ten kilometres, capable of absorbing any form of energy and converting them into mana, the latest creation of Magister.