Shepard holds out his hand. Baz holds his own palm out to Penny. She drops her purple stone into it. Then he takes Shepard’s hand, pressing the stone between them. “Cross your heart, and hope to die!” Baz casts. Their hands light up. Shepard’s eyes get big. But he doesn’t try to pull away. “I keep my promises.” “You’ll keep this one,” Baz says. “Or you’ll drop dead.” He slumps to the ground, exhausted from the spell. “Now, where’s my wand?”