I'm looking for some help in making a weakaura that can be used to place bets on who you think will be the first person to die in an encounter.

I'd like the trigger to be a chat event in the raid, party, or officer channel such as "$bet 'Unitname'"
Then the display would be just a simple list of who placed bets and who they bet on like "Wagerer: Horse"

I have very limit knowledge of custom stuff in weakauras and feel i'm a bit over my head, but I think it could be a fun thing to have.
Any help is welcome and thank you in advance.