alot of players are so predictable.

There is little evony can do with multi account because of several reason.
1 player can have legimitate 2-10 account in 1 server by tapping into nieghbors un-secured wireless internet,limited only by the number of open wireless available, which i have mention a year ago.

To prepare yourself, move but few good hero and transfer crappy hero in preparation for an anticipated attack, so you don't have to during.

Name your heros for the task they will be doing to reduce chaos, example, crappy hero for spam wave, name it spammer, scoutbomber as you wish, and you main hitting to have a uniuqe name to differenciate them from valuable hero to expendable one.

Start coming up with multiple strategy just for such a situation, because at this point, Evony won't be able to address this issue for a long time if ever, one must evolve their strategy to anticipate these attack, and if you succeed, they will less likely try again.