This pack anchors to the Personal Resource Display so you'll want to either enable the blizzard PRD or change the anchor to be able to see the icons.
It uses custom lua code to determine which ability should be pressed at any given moment. It will also play a sonar sound anytime you should press Purifying Brew.
The logic of the rotation (and which icons are included in the pack) is based on the following talents:
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This is a very defensive oriented talent build so if you tried sharing it on the Brew discord you'd probably get threatened with a ban.