@JeremyECrawford Re: Twinned spell: Could we get an official list of spells that can be twinned? There are many of different interpretations

— Jeffery Clark (@jefferyclark) June 11, 2015

Here’s the test: is a spell capable of targeting more than one creature? If yes, the spell can’t be twinned. https://t.co/AWBo4AaLOk

— Jeremy Crawford (@JeremyECrawford) June 11, 2015