Alright, it's been a while since I've done one of these again. Just to clarify at the start, this story will be more of a "What If?" scenario, rather than something that actually happens in my multiverse. With that said, let's dive in, shall we?

Disclaimer: I do not own Halo, Bionicle, the MCU or anything else referenced in this story.

It was finished: the Quantum Tunnel had let him succeed in his goal, and the Avengers never suspected a thing until it was too late to stop him. Oh, Mata Nui had shown up in a vain effort to try, but even that proved all for naught.

Still, he couldn't help but admire their tenacity, even as he simultaneously mocked them for it. They had tried to keep the Infinity Stones away from him, scattering them in different directions, but even that had been all for naught.

Earth's Mightiest heroes lay broken and bleeding on the ground, as a blast of Shadow sent Mata Nui flying back. The Great Spirit attempted to rise to his feet, but the battering he had taken had left its toll on him, and he was powerless to stop the Makuta.

With gravity control, Teridax pulled the Stones to him, his gauntlet shapeshifting slots so that the Infinity Stones could seamlessly be integrated into his armor. Space, Soul, Power, Mind, Reality and Time, all became a part of him.

He screamed in pain as the combined energy lit him up with a multi-colored electric shock, but his new body had effectively been designed as an Infinity Gauntlet, and the scream soon turned into laughter.

Mata Nui was able to rise to his feet just in time to see this. Desperately, he called on the power of the Ignika, attempting to stop his brother before it was too late. But it already was. The full might of all six Infinity Stones swatted the Life Energy aside as Teridax turned to his brother.

"You've lost, Mata Nui." Teridax held up his left hand, displaying the six Infinity Stones embedded within. "But if it's any consolation, brother; you will not survive to see my new reality."

Teridax snapped his fingers.

...

Dark Samus hadn't been idle. Between avoiding Samus and fleeing for her life, she still kept tabs on what was going on in the wider multiverse. As such, she had managed to learn of the Pym and Stark collaboration to create a Quantum Tunnel time machine, and immediately realized just all that she could do with such a device.

Unfortunately, it seemed Makuta Teridax had had similar ideas. By the time she had managed to make it to Earth-199999, the Makuta had already hijacked the Quantum Tunnel and used it to retrieve the Infinity Stones.

At that moment, it seemed like she had failed. There was no chance of success now. But the Phazon clone realized that there was actually a way to turn this to her advantage, and while Teridax was distracted by his own victory, she cloaked herself and moved towards him unseen.

In the nanosecond before Teridax snapped his fingers, the Phazon clone latched onto the Stones, so that when the finger snap activated them, all the energy that would have been directed outward was instead directed into her body.

It was more energy than she could possibly absorb, and she knew it. Dark Samus knew that this action would kill her permanently. But that didn't mean her death would be in vain.

Even as the raw energy of the Infinity Stones tore her apart at an atomic level, she channeled the energy into her arm cannon and unleashed it into the sky. A beam of white light shot into space, far from the planet's atmosphere.

She managed to complete her goal before her atoms completely destabilized and she exploded into a bright white light. Teridax was blasted back by the energy as well, his arm now scorched from the raw power.

And in the depths of space, a crack in the fabric of reality appeared, just as the beam of Infinity Stone energy struck it.

...

Deep in the Void, the eternal conflict continued to rage between three Gods, as two of them attempted to keep the third from escaping. Even now, the Galactimind poured its energies into the wall of the Void, creating yet another crack that barely functioned as a window.

"What's the point?" The Separatist Ruler shouted, even as a beam of energy tore into his body. "You're just going to fail, like you always do."

"I would have thought that even you could accept the inevitable." The Supreme Commander agreed, blasting a thousand Star Roads apart. "We're not going to let you escape."

"Arrogance and hatred!" The Gravemind roared back. "Even now your power is waning, struggling to contain mine. The casket cracks and all you defend will fall."

Any rebuttal the two Gods had planned was interrupted when the power of the Infinity Stones slammed into the crack, merging with the Gravemind's power and surging into the Void.

The unexpected shock disrupted the power of the Supreme Commander and Ruler, allowing the Gravemind to use its energies along with the Stones to tear a massive hole into the walls of the Void. A hole large enough for it to escape.

"NO!" Two voices screamed, even as the Galactimind moved the portal around it, freeing itself from the walls of the Void.

The Gravemind laughed even as it shoved the two Gods back into the Void and closed the portal behind it. They would be able to escape of course, but it was already too late. All that time, those eons of containment, was all undone in a single instant.

...

Teridax and Mata Nui looked up in horror at what Dark Samus had unleashed. From the surface of the Earth, the sky was now nothing more than a wall of Flood biomass, pockmarked with countless mouths and tentacles. Everyone on the hemisphere could only look up in sheer terror.

Entire galaxies collapsed as the Galactimind took over their space, before being absorbed into the essence of its form. Worlds and species were annihilated before they even had a chance to understand what was happening to them.

The Gravemind's mere return caused calamity after calamity to countless species, even as the rest of the multiverse took note of its return. Some felt the same terror, others began preparing to fight back.

All of it was in vain.

"No more will." In an instant, it was over. There was no grand battle. There was no false hope. There was no chance for the multiverse to fight back. Not this time. The Galactimind unleashed the full might of its power, and in a single moment, all life across the expanse of reality had become Flood.

"No more freedom." At that moment, a portal appeared and two beings emerged from rift into the Void. The Republic Supreme Commander and Separatist Ruler stopped in their tracks, horror on their faces. They were too late.

"No more mercy." All life had become the Flood. All of reality had become the Flood. And all of reality turned against the two Gods. The final victory of the Precursors was at hand.

The Flood had won.

...

Doctor Strange gasped as the vision ended, falling to the floor of the Sanctum. The Eye containing the shrunken Vahi sealed shut, leaving the Sorcerer panting heavily as his mind replayed what he had witnessed.

The raw panic he had experienced in that vision was still present, but his training as surgeon allowed him to calm himself. It was a vision, not reality and most certainly not set in stone. Still, he knew he couldn't idly sit by, not if there was anything he could do to prevent this from happening.

He knew Dark Samus was still at large. That much had been made clear during his meetings with the Republic. But Samus was hunting her down to finish her off for good. Perhaps he could provide a little help with that.

But the strange thing was Teridax: he was supposed to be dead, so why did he appear in this vision? Perhaps it was of an alternate timeline he hadn't fully witnessed. Still, it was best to make sure.

One way or another, the Sorcerer Supreme had no intention of allowing this potential future to become reality.

Alright, I just want to make this absolutely clear: this hasn't happened and it won't happen. As the ending shows, this is just Doctor Strange seeing a potential future. That's it. In the overarching multiverse of my stories, everyone who's still alive is fine.

With that said, I hope everyone enjoyed this chapter and reviews are always welcome.