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Shapeshifter's Boon Ring
Shapeshifter's Boon Ring
Uncommon
Shapeshifter's Boon: While shapeshifting or disguising yourself, gain a +1d4 bonus to all Checks.
'I'm a talented shapeshifter, too. I can shapeshift a thin body into a fat body. All I need is a steady supply of mince pies and mulled wine.' - Overheard in a tavern in Daggerford
Location - Shapeshifter's Boon Ring
Obtained from Strange Ox, he can be found in each Act in these locations:
- Act 1 - Druid's Grove, near a group of cows. Requires killing him or using the mechanic found by Reddit user Sextus_Rex - hide your party far away, for example, in the prison. Summon Mage Hand and use it to attack the Ox. This will worsen the relationship with the caster, but not make them engage in combat. Only Mage Hand will be destroyed. Then, interact with the Ox and buy the ring. You will also need to offer some compensation in the form of free gold to restore normal relations.
- Act 2 -
Last Light Inn, near Dammon's forge. - Act 3 - in Rivington in a Barn at the beginning of the area.
Killing the Ox in Act 1 will make it unable to obtain the 
Hat of Fire Acuity, which the Ox carries it in Act 2.
Hat of Fire Acuity, which the Ox carries it in Act 2.
Discussion
I tried this many times, with either an invisible Mage Hand or Shovel, but no matter what the Strange Ox just says "moo" and won't let me barter with him.