This power he unleashed was now equal to or even surpassed every single exchange that happened on Jarkare involving his father, Boreas, and the Demon Prince, even greater than the final attack made by his father in a feat of anger and frustration.
For Rowan to reach this power scale immediately he ascended into the Second Supreme Circle was enough to show his potential as a Nascent Primordial.
To understand how powerful this move was, Rowan could have used it to instantly kill Dao Ma, and with the range of this World made of Black Ice, it could have easily infiltrated his Divine Kingdom, freezing it to dust.
If he had unleashed this same move in the Empire-controlled space, he would have destroyed tens if not hundreds of Minor Worlds, almost crippling half of this Empire's worlds in a single stroke!