I like this combo but it should maybe be nerfed?
It effectively doubles all the flamingo's buffs:
When hitting an enemy for the first time, the brawler gets +1 buffed, and the sheriff stores up an invoke.
Then when the sheriff dies and goes out in a blaze of glory, every time it deals damage it creates another +1 buff on the brawler.
The fox isn't strictly necessary, but it increases the damage done by the sheriff.