At the warehouse lair, the five elemental creatures watched as their master Kavaxas cracked his neck a few times, before looking upon them.
"Master." the five bowed their heads to him.
Kavaxas spoke, "Welcome, my Mystic servants. Eons it has been, and yet you all stand before me like it was yesterday," the five smiled at how pleased their master was, as the demodragon paced around, "I confess myself... Disappointed. How long it took you all to summon me back!" he growled while spitting up fire.
The five backed away in fright, as Fire spoke, "Our sincerest apologies, Master. But first we had to find each other."
"You recall we all were separated and sealed away by the great ones who banished you to the netherworld." Water explained
"It took us millenia for each of us to find a way to escape our own seals and to find each other." Metal added.
"As soon as we found each other we got to work straight away to prepare the ritual to summon you." Earth put in.
"But we learned you had returned to the human realm many months ago." Wind finished.
Kavaxas snorted, "Yes. I was cursed to obey a foolish tiger mortal into serving him. But I was formulating my plan to break free from the seal of the ancients and obtain my liberation. And I succeeded, until I was thwarted by turtle men!" he spat up more fire.
"We had heard of these ninja turtles, Master." Water said.
"We've seen them in action." Earth added.
"They are formidable fighters." Fire noted.
"With equally formidable allies." Wind said.
"Enough!" Kavaxas shouted, "I do not need to be reminded of what a pestilence those filthy mutants are!"
"Our apologies, master," Fire began, "But I thought we should let you know the turtles are here in this town."
"They what?" Kavaxas flew up close to Fire.
"It's true, Master. The turtles and their human allies you fought are here in town. And they're with other humans. Humans that contain magic powers as well." Fire continued.
"Mortals with magic?" Kavaxas asked in confusion, "How is this possible?"
"It's true, and the turtles have gained access to magic as well." Water explained, as the five used their magic to project a clip show of the Rainbooms and turtles using their magic to defeat Demon Wallflower Blush.
Kavaxas had an agape jaw as he watched and studied the scene that was being played for him, "It can't be! It's impossible!"
"What is it, Master?" Wind asked.
"There's only one place I can think of where that magic could've originated from... Equestria." Kavaxas squinted his eyes.
The Five Mystics were surprised, "Equestria, Master?" Metal asked.
"Yes. Equestria Magic apparently now flows through them," Kavaxas explained, "But it matters not. I will have my revenge on those turtles, and then I will not only assimilate their souls, but their Equestrian Magic as well. And without the Seal of the Ancients, I am not bound by anybody's will."
"We should begin straight away, Master." Fire suggested.
"Agreed," Kavaxas confirmed, as he flew up through a skylight in the warehouse and looked out into the distance, "Soon this pitiful world will soon belong to me once again!" he laughed.
Meanwhile at each of the Rainbooms homes, their necklaces shimmered on and off in a warning fashion. But the girls were far too asleep to even notice.
The next day, the Rainbooms, the ninjas, Fugitoid, Bebop, and Rocksteady met up at an old run down community center's gymnasium. The Turtles looked around, as Raph spoke to the Rainbooms, "So why're we here again?"
Sunset answered, "To help train you guys in your Equestrian Magic powers."
"What do we need the training for?" Mikey asked, "You saw how well we did against Stonewall Bloomer."
The group looked at Mikey in confusion, "Who?" Rainbow asked.
"Stonewall Bloomer; Wallflower Blush's demon self." Mikey explained.
"You named her demon form?" Leo asked rhetorically.
"Well, yeah. For future reference, bro."
Twilight rolled her eyes and spoke, "Anyway, you may have defeated Wallflower when she was corrupted, but you won by sheer luck. Against Kavaxas you might not be so lucky."
Donnie nodded, "Twilight does have a point. If we can truly learn to master this magic we have we won't need to use the Spectro Blasters on Kavaxas."
"Agreed," Leo replied, "All right, ninjas. Let's get to training."
So the Rainbooms set things up in the center to look like a training dojo. Leo went up first while wearing his medallion, "Concentrate." Leo began concentrating on the magic within him and blue magical markings appeared on his body like before. Soon Leo stood in his armor form while carrying his mystical powered swords. He went and attacked several training dummies, before swiping his two swords together creating two wind scythe slashes that cut two dummies in half.
"Wind, check," Leo began as he concentrated on his second element being water. As he concentrated a magical water aura surrounded him. The magical water slithered around his body like a serpent, before he sent his arms forward launching the water in the same direction. The blast of water nailed a bulls eye target on a dummy, "Water, check!"
"Great job, Leo. You managed to get both your elements down." Twilight congratulated him.
"Thanks, Twilight."
"Alright, Leo, step aside," Raph went passed him, "My turn now," Raph began concentrating as the red markings appeared on his body and his own armor appeared on him. He held his extra pronged sais and stood ready, "Time to turn up the heat."
"With your anger that shouldn't be a problem." Mikey joked to the group.
Raph spun around and growled at Mikey, while his fiery aura appeared, "Watch it, Mikey!" Mikey backed away in fright, as Fugitoid spoke.
"Calm yourself, Raphael. Your fire is reacting to your anger, but you must keep it in control or you'll start a wildfire indoors."
"Good thing the sprinklers on the ceiling have been disabled when they closed this place down." Sunset said.
Raphael calmed himself, as his fiery aura toned down, "Ok. Now I'm ready." he attacked several training dummies using his stronger sais, and plowed through some causing the dummies to catch fire and burn up, "Yeah! Who's the turtle? I am!" he boasted.
Donnie went next and activated his armor. Using his Bo/Spear was able to cut down several more dummies, before releasing blasts of electricity at a few targets nailing the bulls eye, before using his mountain strength the break the targets to pieces, "Man, I'm good!" he cheered.
"All right, D!" Rainbow cheered.
"Way to go, Donnie!" April cheered.
"Turtles are looking funky fresh." Rocksteady admitted.
"For reals." Bebop agreed.
"All right, bros. Master Mikey's up now," Mikey began, as he activated his armor, "Booyaksha!" he struck some dummies with his weapon, before using them to unleash seismic earth waves to shake up some bleachers and the targets, "This about wraps it up!" he concentrated again, as vines emerged from the floorboards and wrapped around some dummies tighter and tighter until the seams of their stitching ripped., "Ha! Wrap. See what I did there? Vine Wrap."
"We get it." his brothers said dryly.
"Alright, guys, you've got your elements down. But now you need to learn how to use them against opponents that can fight back." Twilight explained.
"Should we spar against each other?" Donnie asked.
"You could, only if Raph doesn't get carried away." Rarity squinted at the hothead.
"Why am I being singled out?" Raph argued.
"Because you have knack for turning simple spars into all out war." Pinkie explained while smiling.
"She's got you there, Raph." Casey admitted.
"Well, what else can we fight?" Raph asked, 'I mean, could any of you guys handle fighting us with this kind of magic?"
"We could try." Karai admitted.
"I don't think so, Karai," Applejack replied, "I think it's best if we spar against the turtles. We got magic too. So it should be fair play."
"Agreed." Twilight confirmed.
They were about to start, until the door to the center's gymnasium opened. Everyone looked and saw Inferno Blaze and his crew walking in wearing cloaks, "Oh, sorry. We didn't know anyone was here." Inferno began.
"Inferno Blaze?" Leo asked.
"What're you guys doing here?" Rainbow asked curiously.
"And why're you wearing matching cloaks?" April wondered.
"Actually we were looking for you guys." Gale answered.
"Really? So how did you know to find us here?" Shini asked suspiciously.
"Lucky guess?" Alloy shrugged.
Seismic noticed the armor the turtles were wearing, "What're you four wearing?"
"Uh, cosplay!" Mikey answered.
The other three glared at him, "Cosplay, really?" Raph asked rhetorically.
"First thing I could think of." Mikey whimpered.
"That wouldn't happen to be magic you're using is it?" Waterflower asked.
"Magic?" Donnie asked silly, "Come on! Magic isn't real."
"Oh, but it is real." Alloy replied.
"How would you know?" Bebop asked.
"Because we have it too." Inferno answered, as the five were surrounded by a magical aura and they had revealed their true selves.
The ninjas and humans backed away in shock, as Mikey screamed in a panic, "What the shell?" Raph gasped.
"Holy cupcake frosting!" Pinkie gasped.
"What is this?" Fluttershy shook in fright.
"Who are you guys?" Casey asked, as the five approached.
Fire spoke up, "We are the Elemental Mystics; servants of Master Kavaxas."
"Master Kavaxas?" Leo asked in shock.
"Correct." Water confirmed.
"We were at his side eons ago, until he was banished to the netherworld, and each of us was sealed away elsewhere around this planet." Earth explained.
"When we each escaped our confinement, we sought each other out and vowed to bring our master back to the mortal realm." Wind added.
"Well your master's doing time back in the netherworld, so take that!" Mikey boasted proudly.
"That is where you're wrong, foolish mortal." Metal replied.
"Our master is back, and he's looking forward to seeing you again." Fire said.
"Kavaxas is free?!" Leo gasped.
"Oh, great." Karai sighed.
"And when he's through with all of your magic will belong to him." Wind declared.
"No chance." Twilight frowned, as everyone readied themselves.
"Attack!" Fire ordered his brethren.
"Ninjas, take 'em down!" Leo ordered, as the two sides were prepared to clash.