🎲The Changeling counts as a shapechanger, which renders it immune to polymorph and gives it disadvantage vs. moonbeam.

Props to @HellcowKeith for chasing down a hard answer for us.

Here's a great recap from V2Blast who asked the question:https://t.co/BHNicA3tjD

— ThinkDM (@ThinkingDM) December 7, 2019

In Eberron, changelings have the Shapechanger trait. That means a changeling is, indeed, a shapechanger. #DnD https://t.co/q10SwwbsYr

— Jeremy Crawford (@JeremyECrawford) December 7, 2019