If Krassu and Urien are able to think about it certainly they are not alone doing so. It would be dangerous to act too quickly against them. If you are right you are facing the most powerful couple, two very dangerous magic teachers, a 10th Tier Mermaid, a 9th Tier Frost Dragon 9th Tier Vampire Queen not discounting a 4 years old 8th Tier Magician and all the rest of them