Jiraiya started off the battle with great enthusiasm by leaping forward and quickly summoning out several dozen clones with Giant-Rasengans, each of the Rasengans were filled with a pitch black color that looked like a Truth-Seeking-Orb.
Onoki charged at the Tortoise Lord's back, the three heads shot out their attacks and created a massive Dust Release Blast.
The Tortoise Lord smiled and said, "Such power, you young'ns would have been hailed as geniuses if you were in my sect."
Raising her hand, the Tortoise lord shouted, "Singularity!" an intense disturbance in the gravity caused the attacks the two Shinobi threw at her to be sucked into a small sphere.
Sensing danger the two jumped back and watched as the Tortoise Lord pointed out with her finger while releasing their combined Jutsu back at them along with the Tortoise Lord's Death Energy.
A massive explosion shook the area and cut a massive bowl-shaped crater through the water they were hovering over, water quickly rushed back in, filling the cavity, leaving both Jiraiya and Onoki completely surprised by her power.
"I'm the oldest of the four, I even taught them when they were young, so you mustn't underestimate my strength, young ones," The Tortoise Lord said as she placed her hands together and shouted, "Gravity Well Domain!"
The gravity within a hundred miles started to increase dramatically, it was already 40 times Earth's gravity where the control was weakest, and the gravity increased even further the closer it was to the Tortoise Lord's body.
Jiraiya and Onoki were under the pressure of around 50 times Earth's normal gravity, they both grunted and placed their hands together, forming dozens of hand signs as they shouted, "Wind Lord's Sphere!" a massive gust lifted up and surrounded them, disrupting the gravity as their bodies grew lighter, and at that moment they charged at the Tortoise Lord with all of their strength.
The Tortoise Lord smiled and started to exchange blows with the two Shinobi, Jiraiya threw out a few dozen punches and kicks, the Tortoise Lord deflected them all and dodged Onoki's attacks which consisted of blasting fire, wind, and earth Jutsus while combining them into tiny Dust Bombs.
The Tortoise Lord then stopped and took a full powered hit from them both, they had a look of surprise on their faces as both Jiraiya and Onoki found themselves stuck on her body.
Breathing in, the Tortoise Lord placed her hands out gently and placed them against the two Shinobi's chests.
"Immortal Art; Reversing the Scales!" The Tortoise Lord shouted as the power from their own attacks shot back into their stomachs.
The two were sent flying into the water, causing massive geysers to shoot into the skies, Jiraiya and Onoki both coughed up a mouth full of blood and fought through the pain as they flash stepped above the Tortoise Lord's head.
"Combined Jutsu; Meteor Rain!" the two Shinobis shouted causing thousands of mountain-sized to fall from the sky. As they entered her gravity-field the meteors picked up speed and began falling at the speed of sound.
The Tortoise Lord grinned and said, "Not bad," as she lept into the air and started to dismantle the meteors with a simple and gentle touch.
Every time she placed her hand against the surface of the meteors, they stuck to her hands like glue, with a simple wave of her hands, she sent them flying into the other meteors causing massive explosions that sent projectiles of debris out at supersonic speeds.
Jiraiya and Onoki moved in close to the Tortoise Lord's position, and as they reached the center of the chaotic space of exploding debris, they shot out a combined Void-Dust Rasengan.
It hit against the Tortoise Lords shell and sent them flying into the water, the explosion sent up a plume of water as it turned the surrounding area into a giant crater.
The Meteors fell to the giant ocean and created large masses of land, Jiraiya placed his hands together and summoned the Elder Toads on his shoulders and fused with them, throwing his hand signs out, his stomach puffed up as he shouted, "Immortal Fire; Goemon!"
Oil, Fire, and Wind shot out and combined into a massive white flame that overtook the skies, Onoki then used the three heads on his shoulders to pull in the fire, meteors, and the air around him and then charged up his Armor of Stone as he raised his club.
"Dust God's Rage!" Onoki shouted as his spiked club shot up in size, the tip of the black metallic club reached out the earth and fell towards the Tortoise Lord.
As the attack struck, the Tortoise Lord shouted, "Absolute Defense Domain!" a giant black tortoiseshell appeared around her and collided with Onoki's club, a loud booming noise echoed throughout the terrain, the shell glowed with an intense black and deathly energy, while Onoki's club glowed with an earthy brownish color.
The two struggled back and forth, pouring all their energy into the attack, Onoki then let out a loud roar as cracks began to appear on the surface of the shell, Onoki suddenly spun his club and caused a large opening in the Tortoise Shell.
Jiraiya shouted "Thanks old man, I'll take it from here!" before suddenly making his move, Jiraiya ran inside the tear and started creating dozens of Fuin Marking.
Countless black Japanese characters started to cover up the Tortoise Lord's body, the Fuin Markings turned into a black chain that wrapped around her leg.
The Tortoise Lord then slapped her hands together and shouted, "Immortal Art; Ice Death Storm!"
A massive explosion of jagged black ice stretched out like a porcupine balling up.
The black ice radiated with a powerful death-energy, Jiraiya started to back off when the ice shot after them breaking through her own shell in the process.
Jiraiya narrowly avoided the stalactites as the shot out in every direction, one of them brushed past his hand and started to erode the flesh down to his bones.
Using a Kunai to chop off his fingers, Jiraiya successfully made it out of the Tortoise Lord's attack range.
Jiraiya used his gate of healing to accelerate the regeneration process, after recovering he stood next to Onoki who asked, "Did you get her?"
Jiraiya nodded his head and said, "Yes, but only her right leg."
Onoki looked surprised, "I suppose this is all the legendary Sanin is capable of! I guess I'll have to do this my self."
"Old man, don't compare yourself to the great Toad Sage, I'm not done yet," Jiraiya said as he prepared another sealing marking, "Think you can hold her down long enough!?"
Onoki raised his club and swung down at the Tortoise Lord again, the Tortoise Lord clapped her hands together and shouted, "Immortal Art; Death Lord's Fangs!" A giant black snake made of smoke appeared around her body,
The Tortoise Lord jumped pass Jiraiya and Onoki before the club landed, her Snake-Tail then bit out after their throats, Jiraiya and Onoki responded by jumping back as far as they could while throwing out their attacks.
Jiraiya used a massive Void Rasenshuriken and tossed it at Onoki, in return Onoki swung his club and smashed the Rasenshuriken like a baseball, "World Smash!" Onoki shouted as the Rasenshuriken flew towards the Tortoise Lord, as it moved closer, the combined attack of the two Shinobi constantly picked up more and more gravity, right up until became as heavy as the total weight of the planet earth.
The Tortoise Lord's tail surprisingly swallowed the attack with her Snake-Tail, the energy inflated her body as she rose her hands into the air and clapped them together before shouting, "Death's End!"
All the energy from their attack was dispersers throughout a considerably sized area, the black smoke-like death energy traversed towards the two at incredible speeds, Jiraiya summoned as many clones as he could and charged towards the Tortoise Lord in a suicide run.
Onoki shouted and placed his hands tightly around the massive club and surrounded it with a cylinder of Dust Energy, he then swung as hard as he could while rotating the club counterclockwise.
As it ran through the Death Energy it cleared a path for Jiraiya's Clones to make their way through safely, however, the Snake-Tail remained active and attacked the clones with great ferocity.
Jiraiya's clones fought back, turning the entire scene into an explosive battle, Rasenshurikens bounced around and exploded before the snake could attempt to absorb them.
Countless clones perished at the fangs of the Snake-Tail, every bit and scratch leaked into their bodies and it looked like they were aged to death, their skin withered and grew as pale as a ghost, their bodies wrinkled and turned into mummies before they slowly became skeletons and then finally dust.
Jiraiya managed to get one through and sealed her left arm before being destroyed by the Snake-Tail with a merciless chomp.
After gaining enough distance from the deathly fog, the Tortoise Lord could be heard laughing, "Impressive, I was once called the Supreme Array Master and even I have never seen such advanced seals before. The fact you can create these seals without ingredients is what impresses me the most, tell me what is this ability?"
"As if we would help an enemy become stronger amidst the heat of battle, do you take us for fools?" Onoki said blowing steam out of his round nose.
"I know you're older than us by quite a bit, but we still are the elders of our generation, we have plenty of real combat experience, and countless techniques forged in the fires of war. Although still lacking compared to your years of gaining expertise, we aren't so weak are we?" Jiraiya said crossing his arms.
The Tortoise raised her only operable arm before saying, "I must admit, the resourcefulness of your abilities are surprising to say the least, however, if I had my spatial ring, my arrays would have finished you two off long ago, but for now, I'll make do with the Death Energy you two have given me as a sacrifice."
The deathly smoke turned into 12 large, thick pillars that glowed with a powerful black aura, "Array of a Thousand Deathly Swords!" The Tortoise Lord shouted as she waved her hand.
The pillars shined as a massive and complex circular array surrounded the two Shinobi and sent out thousands of pitch black swords that turned into blurs as they approached Jiraiya and Onoki.
The two began moving around as quickly as they could, they knew that if they touched these swords of death, they would die horribly, however, the more time the spent dodging the more they were surrounded by her attack.
"If you give up now, and tell me what these markings are, I will spare you two the pain of a slow and painful death," The Tortoise Lord said as the blades surrounded the two a thick dense sphere-like prison.
The Tortoise Lord was waiting for an answer, however, she suddenly felt her right arm grow numb, then slowly the rest of her body began to follow, "Where are you looking at?" Jiraiya said as his hand appeared on her back.
The Fuin Markings were crawling across her entire body, by the time they reached her neck, she managed to ask, "How!?"
"The two elder toads on his shoulder smiled, "You've been caught in our illusion the moment you cleared the fog around you," Shima said smiling at her.
"We elder toads are pretty good at this Genjutsu, as long as you can hear it will affect you," Fukasaku added scratching his beard.
"The name of this technique?" The Tortoise Lord asked as the seals slowly encroached upon her face.
"Demonic Illusion; Toad Confrontation Chant!" Jiraiya said as he finished sealing her off.
Onoki huffed and said, "Well, maybe you aren't completely useless."
Wrapping the Tortoise Lord's body in bandages marked with a powerful Fuin-Jutsu, Jiraiya smiled and said, "Now the rest depends on Kakashi's team."
As they looked around they noticed the world created by the combined Domain of the Four Immortal Lords started to collapse, everyone noticed each other and smiled, after confiming their safety, they looked over at the battlefield.
Everyone in the Immortal Army was fighting with all of their strength, and they were winning, every time someone was wounded, the Array on their Senin headbands started to glow and engulf them in yellow flames.
Their wounds were healed and they returned to combat, the battle served more than a single purpose, one, to defend the village and world from Madara's plans, and two, to help the new Immortals gain experience.
Right now was an invaluable time for them to gain experience, every time they got back up, they came back stronger than before, more experienced and gaining more comprehension towards their Dao that can't be gained through just meditation.