“What’s he carrying with him?” Dactylius asked.

“Looks like a mirror,” George answered. “He’s in an even uglier getup than he was the last time we saw him, isn’t her” Instead of looking like some weird animal, half furry, half feathered, the Avar now resembled nothing so much as a tree all shaggy with moss. He even wore a great, untidy wreath of leaves on his head.

He came trotting up to the horseman who had called for him. They talked together for some little while. The mounted Avar kept pointing back toward the wall, and toward that portion of it where George and Dactylius stood. Dactylius let out what could only be described as a giggle. “I don’t think he’s happy I almost let the air out of him,” the jeweler said.

“I’d say you’re right,” George answered. “The next interesting question is, what can he do about it?” To turn any harm aside, George made the sign of the cross. The Avar wizard had shaken Thessalonica’s wall, even if he hadn’t toppled it. George didn’t want that kind of power aimed at him alone--or, come to that, at him and Dactylius together.

The mounted Avar, having said his piece, rode on to rejoin his comrades. The priest stood staring at the wall. Even across a couple of furlongs, he seemed to be staring straight into George’s face. George stared back, unable to take his eyes away. He felt the weight of the Avar’s persona pressing on him, and pressed back as strongly as he could.

That seemed to take the Avar by surprise. Abruptly, he turned away and went back into the tent from which the horseman had summoned him. Dactylius tapped George on the forearm. “Did you feel that?” The jeweler spoke in a whisper, though the wizard was far away.

“Yes, I did,” George said. “I didn’t know you did, too.” Some of his pride in resistance faded. If the Avar had set that mental grip on more than one Roman at once, he was stronger than any single foe of his.

“What do you suppose he’s doing in there?” Dactylius pointed to the tent into which the Avar had returned.

“I don’t know,” George answered, “but I think we’ll find out.”

He hardly thought himself worthy of being compared to Elijah or Jeremiah as a prophet, but that prediction was soon borne out. The Avar emerged from the tent carrying not only the mirror but what looked like a wooden pad of water. He set the mirror on the ground; as he did so, the sun angled off it for a moment, the flash proving to George what it was. He began to dance around it. Every so often, water splashed out of the pail onto the ground and onto the mirror.

Clouds crowded the sky, which moments before had been sunny though pale. What had been as good a day as any Thessalonica might expect in November quickly changed to one warning of storm. “Magic!” George exclaimed; nothing natural could make the weather turn so fast.

Cold rain began pelting down onto the wall almost as soon as the word passed his lips. Dactylius pointed. “Look!” he exclaimed. “It’s not falling on the Slavs out there.”

He was right. The rain seemed confined to Thessalonica alone. Past twenty or thirty cubits beyond the wall, the weather remained as it had been. George started to say something, but thunder crashed, deafeningly loud, right above his head. He staggered and almost dropped to one knee.

Another crash came, even louder than the first. George stared up into the sky. He’d never heard thunder like that. Were those just cloud shapes, or did they look like Avars thumping great drums? When the thunder rang out again, he was convinced of what he saw. Those shifting shapes, all thirteen of them, were real.

After yet another peal of thunder, rumblings continued for some time, like aftershocks from an earthquake. The rumblers were cloud shapes, too: little men or gnomes with enormous feet, all made of mist.

“Avar rain and thunder spirits!” George shouted, pointing up into the heavens. He hoped Dactylius would perceive them, too.

Before he could find out whether his friend did, an utterly mundane arrow hissed past his face. He reached for his bow to shoot back at the Slavs, then cursed the Avar wizard as foully as he knew how. No rain fell on the Slavs; their bowstrings were dry. Those of the men on the walls of Thessalonica, though, were soaked and useless.

The thunder spirits thundered. The smaller, less fearsome rumblers rumbled. The Slavs out beyond the walls kept on shooting. George and the other defenders were powerless to reply.

“Where’s Bishop Eusebius?” Dactylius shouted. “He could put a stop to this.”

Wherever Bishop Eusebius was, he was nowhere close by. Peering through the curtain of rain all around Thessalonica as if through a glass, darkly, George saw more Avars come out to confer with their priest. “I don’t know why they’re wasting time talking,” he said. “They’ll never have a better chance to attack the walls than now.”

“Look!” Dactylius pointed not to the cloud creatures in the sky, not to the Slavs and Avars beyond the rain, but to the head of the stairway leading up to the wall. “It’s Father Luke!”

That made George feel as good as seeing the bishop might have done. Father Luke was of lower rank, but George and Dactylius had already seen what his holiness could do. George said, “You beat the one water demon, Father. Can you beat these new ones as well?” He pointed at the thunderers and rumblers up in the sky.

“I don’t know,” the priest replied, putting a hand up over his eyes so he could see the Avar powers without raindrops continually blowing in his face.

“You don’t know?” Dactylius sounded horrified. “Are we just going to stand here and drown, the way people did in the great Flood?” He looked about ready to drown. The drumming rain made his hair run down over his face like so many wet snakes and plastered his tunic to him so tightly, George could count his ribs.

In a way, Father Luke’s answer horrified George, too. In another way, it pleased him. A more arrogant priest would have claimed abilities he lacked and tried to do more than he could, as Father Gregory--the late Father Gregory--had done by the cistern. If nothing else, Father Luke had humility, a virtue in any Christian man and all the more vital in a priest.

“God provided in the Flood, telling Noah to build his Ark,” Father Luke said. “I have faith God will provide for us now, if not through me, then surely through someone else.”

Again, George did not quite know what to make of the response. Admiring the depth of Father Luke’s faith, he had trouble sharing it. He knew he had not the temperament of a man like Job, to go on unceasingly praising God regardless of the misfortunes befalling him.

Instead of criticizing the priest, though, he tried to nudge him into action: “You routed one water demigod with water of your own from the baptismal font. Can you do the same with these--?” Before he could say things, the thirteen thunder spirits let loose with another crash, one so enormous he thought it would split his head open.

Father Luke’s shrug was not encouraging. “They are there” --he pointed up into the sky-- “while I remain down here. I see no way for the sanctified water to come in contact with them, as it did with the Slavic demon in the cistern.”

“All right, you can’t do that,” George said, following the logic without liking it. “What can you do? You have to be able to do something.”

“And you’d better do it soon, too,” Dactylius added. He sounded both insistent and frightened, neither of which George wanted. The shoemaker aimed to make Father Luke figure out what he could do and then to have him do it, not to alarm and rattle him.

Father Luke, fortunately, seemed neither alarmed nor rattled. “I can pray,” he answered.

It was, after all, what a priest was good for. Even so, George would have preferred a response somewhat more aggressive. He was beginning to feel as much like a drowned rat as Dactylius looked. “Well, if that’s what you can do, you’d better get to it,” he said roughly. “The Slavs out there aren’t going to be content with shooting at us up here on the wall, not for long they won’t. Pretty soon they’ll try knocking it down again.”