Board Thread:Show-Related Questions and Answers/@comment-5051564-20141201201913/@comment-25355646-20141209163104

That would explain why we don't see Ingrid use barely any magic for episodes 8 and 9. She sacrificed all her magic to cast her spell. She said to Anna in the dungeon that it would take an entire lifetime to harness enough dark magic to cast the spell. But she was able to get around that by sacrificing almost all of her magic to cast it.