Not a macro, so much as a script, but since you are a pro user, here is the one I use , by Three of Swords. I've modified my copy to output for the Shaped Sheet, but the original I linked is more generic. Just change the text in the "sendChat" line if you want to modify the output. Put the "overdrive" status on any token. Whenever it takes damage, a Concentration check is posted to the chat.