If Alex didn't know about the Devourer Curse and hadn't seen a living, breathing Devourer beast, he would have easily believed these terrors to be some mythical creature from a fairy tale.
Varon explained many scary abilities of the Devourer beasts that become weirder and weirder, but after telling about many horrifying traits of them, he reached the topic that Alex was anticipating to know from the start.
"The Devourer beasts could consume organic matter to increase their strength, but that takes a massive amount of organic matter and time."
"The Devourer beasts don't have any limit to their strength, and if given enough organic matter and time, they could even reach the First Transcend Rank and even surpass it."