Elminster was born with psionics, and used them before knowing much about Mystra. See "Elminster: The Making Of A Mage" (long before the…
— Ed Greenwood (@TheEdVerse) August 13, 2017
Elminster shows Psionic talent in “The Making of a Mage?”
I do not remember that at all.Right at the very beginning, when his village is attacked. Before he ever used the Art.— Ed Greenwood (@TheEdVerse) August 13, 2017