[HMM III OFF TOURNAMENT] "Race for the Leader"

Could someone please explain what "hero digger" and "ballista killer" are? I've never used them and I'm hearing about them for the first time:confused:

Check out the links in the first post of this thread and read the information there. If it's still not clear after that, you can ask your question there as well, and you'll probably get an answer.

Best regards, K0Lb@zzeR.