I didn't have one, but seemed like a good idea, so I made it:
Code:
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Shows an icon when the statue is up, shows a health bar, flashes red when the statue is getting hit.
Only caveat is there's no way to directly check the health of a totem (which the Ox statue technically is), so have to just check the combat log to get its Unit ID - which means if you /reloadui or log off/on while your statue is already up, it stops working until you resummon. Shouldn't be a common thing, though.