“I was summoned,” a female said, and Tessa strained, as if she could see further into his side of the mirror if she only had the right angle. “That shouldn’t matter,” Achaz spat. “Ah, but it does,” she said, a shadow falling across Achaz’s features when she crept closer. “Because all magic comes with a cost, including unlocking a realm. It’s all about balance, right, Father?” Father?