"You're of age now," Oma told Ari as soon as he settled in at home for the summer. "Now there are no excuses for not being trained. Let's see how you would do in a duel against me."
Ari did the best he could, but it wasn't long before he was hanging upside-down from the ceiling. Oma lowered him and said, "You still have a lot to learn. How would you block an unforgivable?"
"Either dodge or use an object," Ari said.
"I'll send a harmless green light at you," Oma said. "If it hits you, you're dead. Do what you can to avoid it."
Ari dodged repeatedly as Oma kept sending her green lights, faster and faster. When it was getting to fast to dodge, he pointed his wand at the table and shouted, "Wingardium leviosa!"
"Stop," Oma reprimanded. "Can't you cast silently?"
"I'll try," Ari said. He spent most of the day practicing whatever spells Oma felt like having him do. By the end of the day, Ari felt school was much easier.
"If we would know what the rasha is planning, we could be better prepared," Oma said.
"I have no way of knowing what he's planning," Ari said. "He wouldn't share his plans with me."
"For all we know, he may be kidnapping and killing all your professors next," Oma said. "You don't know who will be teaching you this year."
"I'm only taking three classes," Ari said optimistically. "I think I can put up with that."
"Do you know how to do the confundus charm?" Oma asked. "It could be helpful when making a fast escape."
She practiced with Ari for most of the next day he was back. The next day was spent on healing charms. For a week afterward, Oma had Ari go over and practice everything in Practical Defensive Magic and Its Use Against the Dark Arts.
"If I would know that Dumbledore's replacement was competent, I wouldn't work you so hard," Oma said when Ari asked if he could take an afternoon off to play ball.
"McGonagall will probably replace him," Ari said. "She's the deputy headmistress."
"There's no way of knowing for sure," Oma told him. "Never assume anything."
The next time they practiced dueling, the two of them managed to demolish the entire living room.
"You're getting there," Oma said as she repaired the damage. "But considering all that's happening, you can't be too prepared. How do you fight a dementor?"
"The patronus charm," Ari said confidently.
"Show me," Oma ordered. Ari did.
"How would you fight inferi?" Oma asked next.
"Fire?" Ari guessed.
"Good," Oma said. "Don't forget anything you ever learn. You never know when you may need it. I also think you should take driving lessons. It will be another method to escape."
The best part about driving lessons was that Ari got away from Oma for an hour at a time. Driving was fun, and he always honked and waved to his muggle friends when he passed them. They were all surprised he was learning to drive already as most yeshivas didn't allow it so young.
Oma continued harassing Ari with her constant training. Ari begged for at least one additional hour off to play games on his family's new computer. Oma hesitantly agreed, as long as it was in the evening, after dinner. This way, she wouldn't have to worry about Ari throwing up during a duel.
Oma taught Ari how to do a disillusionment charm. She felt that was really important to help Ari escape. Ari was starting to feel as if Oma considered every spell to be really important. He practiced flying his broomstick all over the house. He practiced dodging green lights a little too often. He practiced stunning, although his parents didn't enjoy being the targets. He practiced fixing broken items, although he didn't know why that was important.
"You never know when you will need it," Oma was constantly saying.
He practiced the levitating charm and the impedimenta jinx. He practiced the blasting curse, which was really fun. Confringo soon became Ari's favorite. He practiced blocking whatever his grandmother tried on him. He practiced disarming.
"If Harry Potter is your age and he successfully dueled the rasha so many times, there's no reason you shouldn't be able to," Oma said when Ari complained that he needed a break.
Oma had Ari practice cutting hexes. He couldn't imagine any situation where he would specifically want to cut someone, but by now he learned not to argue with his grandmother. She also taught him the fidelius charm, although Ari didn't know why he would want to make a property invisible.
"The Daily Prophet isn't reporting as much as usual," Oma complained. "That means we're probably going to end up with a new minister sooner or later."
Oma made Ari review everything he learned in Runes. This way, he could spend less time on his homework and more time helping others who may need to escape. Ari couldn't believe how carried away Oma was getting, but once again, he bit his tongue and said nothing. She also went through Hogwarts A History and explained all the protections already on the castle.
By the end of July, Ari felt like he went through six years of schooling over the course of one month. He really wished he could tell Oma she was getting carried away. Tatti told her occasionally but whenever he did, she insulted his lack of intelligence. There were many more things that Oma wanted Ari to learn, but Tatti insisted it was illegal to teach him apparition herself and that portkeys were regulated by the government. Unforgivables were obviously out, and Tatti managed to get Oma to agree that as long as the ministry is still standing, she won't break any laws. And so, in July, Oma and Ari were law abiding citizens.