Once Upon a Time has found its good witch!
As first reported by TVLine.com, Glinda is an elegant and wise witch, though years of isolation have made her lonely.
Mabrey joins the previously cast Rebecca Mader, who plays the Wicked Witch of the West. The second half of Once's season will take on a heavy Oz theme.
Get more scoop on the Wicked Witch in our recent Lightning Round!
Once Upon a Time returns Sunday, March 9 at 8/7c on ABC.