Need some mod help

So ive been using the pixelmon mod for a while now, and have been wondering if there was a mod that would play some sort of sound or alert when a specific thing was said in chat. For example, it would (am I using the correct word here?) 'ping' you if you had set it to your name. So if someone said in chat: Hi Pigster7000, it would alert me. The reason I want this is because I am legend hunting. I go AFK and wait for one to spawn. Since the update, it now says something like "A legend has spawned in a plains biome!". I want it to alert me when it says that. Is this possible?

Pigster7000