She'd been willing to die for much less before Urza rescued her, but she'd come to the Fane of Flesh because she wanted to live.

Choices and questions, all of them morbid, paralyzed Xantcha at the edge of the pit, and then she heard laughter. She scrambled to her feet, scattering hearts, crushing them in her frantic clumsiness. There was no one behind her. The laughter hadn't come from the corridor, it came from within ... within her mind and within her heart.

Throwing the hook aside, Xantcha waded in the pit, sweeping her open hands in front of her, moving toward the laughter. She found what she was looking for not far below the surface, neither in the middle nor at the pit's edge. There was nothing to distinguish it from any other heart stone-a few scratches, but no more than any other stone she'd touched, glowing or dark. Yet it was hers; it had to be hers: Urza's armor absorbed it as it lay in her hand.

Another burst of popping hearts interrupted Xantcha's reverie. A hundred, perhaps several hundred, Phyrexians had died since she entered the vault, and the chamber was as bright as it had been when she entered. Xantcha tried to calculate how many glowing hearts lay on the surface, how many more might lay beneath. She gave up after a few attempts, but not before she'd decided that unless she told

Urza about the heart vault, it would be a very long battle before he achieved vengeance.

Her heart was too big to swallow, too risky to carry in her hand. Xantcha tucked it carefully inside her boot before she headed off.

Finding her way out of the Fane was harder than finding Urza. Flames, smoke and sorcery ratcheted through one- quarter of what passed for the Fourth Sphere sky. While she'd been looking for her heart, the demons had mounted a counterattack.

Urza's hulking dragon was surrounded by Phyrexia's smaller defenders: dragons, wyverns and whatever else had been summoned from the First Sphere through the very hole Urza had burnt for himself. As she'd warned him, individually Phyrexia had nothing that could equal his devastating tool, but in Phyrexia, individuals weren't important. For every compleated priest, even for every scrap-made digger or bearer, there were twenty warriors: fleshless, obedient, and relentless. The demons aimed the warriors at Urza's dragon where they died by the score and occasionally did damage.

The dragon's wings were shredded and useless. Two of its legs had been disabled; a third burst into melting flames while Xantcha looked for a path through the Phyrexian lines. Urza could still defend himself in all quarters but if-when-he lost a fourth leg, there'd be gaps, and it wouldn't take imagination to exploit them.

You're lost! Xantcha shouted silently, adding an image of the vault of hearts, There's a better way! 'Walk away now! But though Urza could easily extract thoughts from her mind, she'd never been able to insert her thoughts into his.

There were hundreds of Phyrexians on the battlefield and even a few gremlins. All of them were in greater danger of being trampled by the relentless warriors than they were from anything in the dragon's arsenal, but their presence, a thin layer of chaos across the field, was Xantcha's best hope of getting to Urza.

Relying on Urza's armor to protect her from everything except her own stupidity, Xantcha dodged fire, lightning and the distortions of sorcery as she threaded her way through the Phyrexian circle. Once she came face to back with a demon. It was dark and asymmetric, with pincers on one arm and a six-fingered hand on the other, and it had eyes in several places, including the back of its head. Nothing like Oix, except for the malice and intelligence in its shiny red eyes. It studied her from boots to hair and vat-priest hook. Xantcha was sure it knew she wasn't what she was pretending to be, and equally sure Urza's armor wouldn't protect her from its wrath.

Just then a wyvern screamed, and the demon turned away.

A wall of sharp, noxious yellow crystals exploded from the ground between Xantcha and the demon. She staggered back and watched the demon uncoil like an angry serpent, writhing toward the dragon. Urza's armor protected Xantcha from flames and emptiness and corrosive vapors, too. She followed the wall of crystals as it extended across

Phyrexia's Fourth Sphere toward Urza and his dragon. If Urza struck down the wall, Xantcha was meat. If he didn't, it would claim the fourth leg from his dragon.

But not before she swung up into the leg's scaffolding, climbing for her life and his.

Xantcha made an easy target, running across the dragon's back, but nothing attacked. The Phyrexians overhead didn't recognize her as an enemy, and Urza's attention was centered on the noxious wall. Xantcha fell hard when the leg collapsed. Worse, there was blood on her hands when she hauled herself back up. Either her armor was weakening, or Urza was.

She swung down between the dragon's shoulders expecting the worst.

Urza reclined in a wire shrouded couch. Smoke rose from his charred trousers. The dragon's wounds were reflected on his body. Bruises, contusions-bleeding contusions-covered Urza's hands and face.

Xantcha had never seen Urza hurt. She'd assumed he could be destroyed. She hadn't imagined that he could be wounded. She stood, confused and useless, for several moments before she found the courage to touch his shoulder.

"Urza? Urza, it's time to 'walk away from here, if you can."

No response.

"Urza? Urza, can you hear me? It's me, Xantcha." She put some strength into her hand. The whole couch rocked a bit, but there was no response from Urza. He was still in control of the dragon, still fighting. As mindless as any of the wyverns, Urza had abandoned sentience and become the tool. "Listen to me, Urza! Vengeance is slipping away. You've got to leave now!"

Urza's eyes opened. They were horrible to behold. He started to say the one word that would have been more horrible to hear than his eyes were to see, but he didn't finish: "Yawg- "

The Ineffable. The name that must not be spoken. Xantcha knew it; they all knew it. It was with them in the vats. But Urza should not have known it. He'd never gotten anything out of Xantcha's mind that she had not been willing to give him, and she'd never have given him that.

Every instinct said run, now, alone. Xantcha resisted. Urza had rescued her when she'd had no hope. She wouldn't leave him behind.

Xantcha reached across the couch and took Urza's wrists as he so often took hers. She steeled her nerves and stared into his seething eyes. "Now, Urza. We've got to leave now. "Walk us somewhere safe-to the cave where you took me. And leave ... leave that name behind."

"Yawg-"

"Xantcha!" she screamed her own name at his face.

His hands grasped hers and her vision went black.