1. Buy a Jr.member account (the cheapest one).
2. Use a hero or legendary member's old legacy address in games and rounds or in some giveaway.
3. Then, wait to be reported as known alt accounts.
4. After confirmed for alt account, do a copy-paste to get perma ban. (easy as 1,2,3..)
5. After ban of Jr.member, now wait for reporting of ban evasion to ban that legendary member to accomplish a mission.
You can give it a try, but likely it won't happen with a Jr member account. You have to build or purchase at least a sr. member or above. But still, just copy-pasting the address won't help you. To ban a high-ranked account for evading a ban, moderators would have some more investigation besides the evidence you provide. If it was so easy, then we would have lost our account long ago. Because I have a lot of enemies here since I left a lot of tags.
However, it's quite impossible a Legendary member will create a new account to copy and paste from there. It doesn't make sense; use your brain. It's just a matter of common sense. If something like this were possible, then most of the DT members would be banned from the forum.
Btw, having multiple accounts allowed unless you abuse the forum system or signature campaigns. So reporting as known alt accounts doesn't make sense.