Most of the spells you'll hear throughout the movies were scripted, but actor Daniel Kountz, who played Kalabar's son, Kal, had to come up with a spell on the spot during his first scene.
Kountz told MTV News in 2016 that the script read, "Kal says spell and walks through the portal." But he'd interpreted that to mean someone would fill in the blank when the time came.
When director Mary Lambert asked whether he had his spell prepared just minutes before shooting, Kountz lied and said he did. He ended up reciting a line from a random German song he'd remembered from his high-school choir days.
"I just pulled that out of nowhere, and they ended up using [it in the movie], and I think it actually worked out pretty well," he told the publication. "Little did they know I was freaking out because I didn't have my spell prepared."