I did find a few things on discord.
Prototype countdown macro:
```/micon "Attacking Target" quickchat
/quickchat "Attacking Target"
/mk attack5 <t> <wait.1>
/mk attack4 <attack5> <wait.1>
/mk attack3 <attack4> <wait.1>
/mk attack2 <attack3> <wait.1>
/mk attack1 <attack2> <wait.1>
/mk circle <attack1> <wait.3>
/mk off <circle>
/quickchat "Charge"```