The Ashmadai erupted.
Yvon may have been right-Farideh alone stood little chance against the assembled cultists. Inevitably, Havilar would fall as well. But Havilar would take a great many of them with her, regardless of the madness that seemed to grip her.
And Farideh would keep her from falling.
She cast a stream of flames into the crowd, neatly parting it and keeping Havilar from being overrun. Her sister seemed, again, to try and cast through the rod, again, frustrated when nothing came of it. She dodged one of the Ashmadai warlocks, tripping him into a comrade so his spell discharged in a messy burst of burning smoke that left the Ashmadai screaming in pain.
Farideh cast a similar cloud of miasma around her, catching the four cultists advancing toward her. She stepped through a rent in the planes and reappeared on the other side of the room, where she could more easily-
A sharp pain exploded from the side of her skull, and her head rocked sideways as something caught her horn and wrenched her neck. She fell to her knees, her vision crumbling into stars. Instinct urged her to move, and she rolled onto her back in time to dodge the big tiefling’s bludgeon smashing into the floor beside her. She threw up her arms and he grinned wickedly, pulling back for another strike.
“Adaestuo.” The blast streaked past the tiefling and crashed into the ceiling above him, punching a hole through to the shop above. Chunks of plaster and floorboard hailed down on them both, but the heavy joist swung down into the man’s head, knocking him senseless for a moment. Farideh cast another blast at him, throwing him backward into the fray. He slammed into Havilar, who caught his weight and threw him to the ground before pinning him down with Farideh’s sword.
Yvon lunged at Havilar. Farideh’s blast caught him and he stumbled, enough to give Havilar time to pull the sword free and turn her attention to the shopkeeper. She slammed her palm against his breastbone, arresting him, and gave him a wicked grin. The flash of magic that pulsed over Yvon’s body shimmered like a slick of lamp oil. His face contorted in pain, his eyes rolled back, and he fell to his knees. The pulse came again and he collapsed.
Havilar looked up at Farideh and sneered. She pulled the sword free of the tiefling man’s body. There were only three Ashmadai still standing, and those had sense enough to stay back.
“Havi, come on,” Farideh said, one hand pressed to the lump growing on the back of her head. The bludgeon had half caught on her horn, but it had hit her hard enough to make her head spin as she lurched toward her sister.
Havilar regarded her, cruel and amused, as if she were watching a spider whose legs she’d plucked one by one try to cross the floor. She turned her attention, unhurried, to the remaining Ashmadai-all armed with daggers. She dropped the sword and the rod and gestured with her hands at the nearest one, the one wounded by Farideh’s miasma. His eyes seemed to glaze over and he turned from Havilar to the cultist beside him, a tiefling woman with wild, white curls. Without a word, he plunged his dagger to the hilt in her back.
Farideh froze, watching as Havilar directed the cultist to go after his final fellow. The last man bolted for the stairs, but as he did, he passed Havilar, and again she caught him with that strange pulse of oily magic, and he collapsed. The other Ashamadai was on him in an instant.
Farideh bent and picked up the rod, uncertain of what was happening, of how much she was imagining. She pressed a hand to her skull again and the hand came away sticky with blood.
“Havi,” she said, her voice shaking, “stop.”
Havilar didn’t respond and kicked the final Ashmadai under the chin so that his head snapped back hard. Dazed, he hardly fought as she stabbed his comrade’s dagger into the fleshy part of his throat. Dark blood gushed out and he collapsed.
Havilar scooped the sword off the ground and turned to face her sister. Her face was a mess of cuts and swollen lumps, but Havilar didn’t seem to notice at all. She advanced on Farideh.
“What …” Farideh tried to ask. Her head had started spinning again. “What have you done? Why did you-” She turned aside as Havilar lunged forward with the sword, barely missing the blade. “Havi!”
“You’ll have to kill her,” Havilar said, her voice raspy and her grin maniac. “I won’t let her go.”
“What are you talking about?” Farideh shouted. She ducked under another sword strike. “Havi, it’s me!”
“It should have been you, warlock,” Havilar said, pressing her past the altar. “But no mind. Only you will know my mistake, and you were always meant to die.”
“Assulam!” The altar burst into pieces, making Havilar step back and giving Farideh room to retreat. But the shards of stone had no more clattered to the ground but Havilar was advancing on her again.
Suddenly it felt as if a net had been cast over her, and she found herself dragged toward Havilar and the sword. Her hand convulsed around the rod, and trying to move her own arm became a battle fierce as the one they’d just finished. It wasn’t Havilar casting spells, but it was Havilar’s body standing in front of her.
“Who are you?” Farideh whispered, her jaw stiff against the spell.
“Your sister,” the creature in her twin’s skin replied. “For now.” She placed the tip of the sword against Farideh’s breastbone and tilted her head. “I wonder what she’ll do when she realizes that she’s the one who killed you. Will it break her, or will she be glad she finally managed it?”
The force holding Farideh’s body stiff snapped audibly as she wrenched her arm upward. Havilar’s eyes widened, and Farideh felt the being try to close the force back over her again. But Farideh was already shouting the trigger word that vanished in the roar of a wall of flame.
The fire only singed Havilar’s hair and the edges of her armor, but the force of the spell threw her backward. She crashed against the wall, her head snapping back like a discarded doll, and crumpled at its base.
Farideh started toward her sister’s body, but her legs buckled. The strange magic still clung to her. She wrenched herself up and half-stumbled, half-crawled across the mess of bodies and blood and rubble. Havilar lay slack and senseless on the floor, her breath ragged and her pulse thready. She didn’t stir when Farideh tapped her cheek.
Farideh cursed. She hurried up the stairs. Kalam lay sprawled across the shop floor, cut from throat to belly and leaking blood and gore onto the polished floors. Farideh’s knees buckled before she was messily sick beside him. Her head was still pounding and when she wiped her face, her hand was streaked with blood that dripped from her nose.
Panting, she reached for the healing potions and gathered up an armful before stumbling back downstairs. She fed one to Havilar and watched as her wounds closed and her bruises faded. But she didn’t wake. A ruby drop of syrup pooled in the corner of Havilar’s mouth and ran down her cheek like a stream of blood. Farideh cracked another. And a third, but Havilar didn’t wake. She cursed.
Her hands cold and shaking, she opened the last of them and drank it herself. It tasted like bile and chalk, but it made the pain in her head fade and the shock that kept threatening to overtake her body retreat into a simpler, more focused panic.
There was nothing to be done for the Ashmadai, and if she didn’t hurry, there would be nothing to be done for Havilar either. Farideh could almost hear Mehen bellowing not to move Havilar, especially not when her neck had slammed against the wall like that, to try and wake her before she slipped away.
But whatever was wrong with Havilar, whatever had come over her, no Ashmadai was going to forgive her because she might have been concussed. Farideh shoved the rod into her belt, and the sword as well, maneuvered her arms around her sister’s middle, and hauled her up the back stairs into the little garden. The rain was still coming down in a heavy patter. She laid Havilar on the muddy ground while she unlatched the little shed and led the donkey out.