Penny dealt with the barrage with her own wall of fire. The small fireballs only merged with her flames. The blonde eyed Fleur, seeing the Veela teen focused solely on her construct and took action. A stomp on the ground sent a spell through the dirt. When said spell reached Fleur's position the dirt under her feet heaved upwards about a dozen centimeters. This sudden disruption of her footing broke her concentration and the fire bird dissipated. Penny gathered her wall of fire into a ball for a moment and then sent a wave of flames across the battlefield at Tonks and Harry. Both of them had huddled under their own Protego to defend against the fireballs.
"Cheap!" Tonks squawked as she clapped her hands together with a look of intense concentration on her face. The air in front of her began to swirl and then spin rapidly. The flames were sucked up and blown out like a candle in mere seconds. Harry merely yanked the water from the wet ground and doused the wave of fire heading for him.
"Sagitta Flamma!" Fleur conjured fire from her left hand and then shaped it into arrows with her wand. That didn't look safe to Harry.
"So much fire today!" Tonks laughed as she conjured up a large amount of water and then had it swirl into a point like a massive drill. That was going a bit too far!
"You're not exactly giving any ground yourself!" Penny yelled to her older friend as a bright ball of mana was held between her hands. That also didn't look good!
"Enough!" Harry roared out just before the girls could launch their spells. He conjured lightning for the first time in a while. Channeling the Fulmen Curse down his arm and to his index and middle fingertips he launched a bolt of electricity into the air. The sharp buzzing sound followed by the crack of super-heated air snapped the girls out of the 'free for all' and made them look at Harry. "I think we were all a little caught up." He huffed, starting to realize how much mana he had expended during their little 'duel'.
"I'm so sorry." Fleur apologized as she dismissed her spell. "I got too competitive."
"No, no, I'm the adult here. I should have calmed us down earlier." Tonks shook her head and dispersed her conjured water.
"I think we all got a bit carried away." Penny admitted as the ball of mana in her hands shrank and then faded away.
"Sorry about that." All four of them apologized at the same time. When they all realized they said the same thing in unison Tonks and Harry cracked up. Their laughter triggered Penny and Fleur making the platinum haired girl and the blonde both descend into giggles.
"C'était incroyable!" Gabby came rushing towards the group, her beaming smile could have lit up the night. "Votre magie était si chouette! Peux-tu m'apprendre?
Je veux faire ça!" Fleur quickly gathered her little sister up into a hug and picked the younger girl up. Gabby giggled and hugged her older sister happily.
"Peut-être quand tu seras plus âgé." Fleur smiled at her little sister.
"I only understood about half that." Harry whispered to Penny and Tonks.
"More than me, I only understood the first sentence." Tonks admitted with a shrug.
"She said, 'That was amazing.', 'Our magic was so neat.', 'She wants to know if we can teach her.', and finally 'She wants to do what we did.' Is what she said." Penny clarified since she was fluent in French.
"What did Fleur say?" Harry asked since he hadn't caught what his friend had said to Gabby.
"Maybe when you're older." Penny translated for him with a soft smile at the sister's interaction.
-At the Chateau-
"For a moment I thought we'd have to intervene." Marius exhaled in relief seeing how much his daughter and her new friends were getting into their 'duel'.
"I figured one of them would realize pretty quick when it started going too far." Sirius smiled, though he already had his wand out.
"They're very impressive." Appoline breathed out in amazement. "Fleur is so far ahead of her school mates in Magic already. But those three kept up with her so easily."
"Harry, Penny, and Tonks are all quite the gifted Spellcasters." Sirius chuckled as he put his wand back in its holster.
"They're exactly the kind of friends our little Flower needs." Marius smiled. "One's that are on the same level as her, and won't be jealous or resentful of her talent. I'm so pleased that she's found three such people." The French father looked truly happy for his eldest child.
"Yes, we should have visits from time to time." Appoline agreed. "We should exchange Floo addresses so the children can talk or visit on breaks and such."
"I don't think that will be a problem." Sirius smiled brightly as the adults watched the youngsters play around on their way back to the Chateau.
"What's this?" Harry asked as Fleur smiled. The Veela girl handed him a small stack of parchment and Harry read the top line. "Magic Measurement: Mana in relation to Spell Effects and Power." Harry blinked at what was clearly a title before reading a bit further. "Oh, I see, so they want to further understand and quantify mana and how it applies to using Magic." The parchments Fleur had handed Harry were the Magical equivalent of a research paper. Apparently several Magical Scholars had taken his measuring method and used it to further break down and understand Spells.
"It is so very interesting, Harry!" Fleur smiled at her friend. "Madam Aveline is part of the research group! She makes copies of her notes for me to look over! They've broken down your mana measurement into two factors!"
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