@AseahawkfanInvoke Duplicity: Does it take your spell concentration slot? Or is it like a spell, but doesn’t count as casting one? If a feature says it requires concentration, as Invoke Duplicity does, you can't concentrate on it and a spell simultaneously.
— Jeremy Crawford (@JeremyECrawford) March 31, 2015
Invoke Duplicity: Does it take your spell concentration slot?
