As you softly push open the door, you spy Issar Roon standing in front of one of his massive overstuffed shelves. His finger tracing over bindings of books and ends of scrolls, his body hunched with age as his eyes comb the shelf for something specific. The room was musty, dark and lit only by a handful of candles on the desk and the one Issar held in his hand. As you step inside he turns and you can see displeasure cross his features.

No stories, not today. I'm too busy.

He turned to ignore your presence, finally pulling a massive scroll from the shelf. He tries to balance it with the candle held in hand but is obviously struggling with it as he grunts pulling it free. The shelf shudders and shakes as the piles reorganize and rebalance with the scroll's absence. You see your opportunity and quickly cross into the room, lifting the scroll from his grasp you hear him grunt.

At least you're somewhat useful, here put that scroll on my desk.

He toddles over to the desk and points exactly where he wants it with a bony finger. As the scroll is laid down he rolls it out and reveals the rings of Phyrexia. Pointing to the outermost ring on the map he begins speaking.

Phyrexia. The most vile plane. Here, look. Nine rings. But not rings, spheres. Concentrically built. It's so vile, but beautiful at the same time. All mechanical! Can you imagine? A world without natural life. Or is it... would you consider self reproducing magical mechanical entities as life? I don't but some might. Consider this, the first sphere. This sphere is a... a mockery of a real plane. Mechanical plants and jungles with oil rain...

His hands unfurl more of the scroll to reveal the next ring of the plane, the scroll's age has begun to show with cracks and stains. The writings faded in certain spots, though Issar does not seem to be reading and instead just reciting what he knows.

This is for ruins from the first sphere. Factories and smokestacks for what is contained within, along with ammunition and weapon stockpiles larger than some mountains! It's unbelievable to consider really. Such a warlike machines and organization...

He tosses the scroll and has it reveal multiple rings, rolling up to the edge of the desk and just before it looks to fall off the desk it stops, balanced against the slight raise at the edge of his desk.

Going deeper though is like delving into a complex machine. Because that is what it is. It's a machine, the entire plane! This third sphere is the plumbing, the pipes, the cables. But it is inhabited, the plane has horrible beasts and creations and horrors in the dark corners. Now consider this, plumbing is usually kept under the people right? Not so! The fourth sphere is where the main Phyrexians live. They are born, well not born, but grown in vats. Newts as well. They're born, grown, raised, trained and built here. How astonishing!

Roughly pulling the scroll he shifts the focus to reveal the next several spheres nearing the center of the plane.

It truly seems unfathomable, the plane is so alien... just remarkable. The plane continues further with a fifth sphere, this is their 'Boiling Sea.' Burbling and black. It's a nasty mess. As if the horrible liquid wasn't enough, it has its own steam powered beasts that inhabit and patrol the sea. Long Steam powered Leviathans and massive metal-work Krakens. Woe be the adventurer who crosses them!

But should the adventurer successfully surpass it, and make it to the sixth level, then they're in for a surprise! Organization! Government! Yawgmoth's... what? Who's Yawgmoth? Yawgmoth is evil, incarnate as far as I'm concerned. Yawgmoth was not a planeswalker, but Dyfed another Planeswalker brought him to Phyrexia to remove him from Dominaria. He was a medical genius, but evil through and through. He soon came to rule the plane with his servants and creations. So yes, his servants who helped him manage the plan.

Here the seventh plane. This is the horror. Giant furnaces and flames. Used for power and torture, numerous phyrexians have died here suffering torture and pain. It's the place of much sorrow, few survive to escape it, the only one I know of being named 'Gix.' Then here, the eighth sphere. It's energy. That's all we know. I believe it to be the fuel for the furnaces and a source for the life that Yawgmoth can imbue into his creations.

The ninth sphere... that is the core. The heart. The brain. Not any more, but it used to be the core of Yawgmoth's power over the plane. His sanctum from which to plan his evil.

The scroll begins to be rolled by his bony fingers, putting away the map. Much more lays hidden in the rolls but he shows no more and continues to put it away.

Such horrible atrocities happened there. Yawgmoth was so evil. Evil beyond belief. Such horrors to behold. No no I never saw it. I've seen artifacts at some other universities but nothing living, just relics. Let us hope we never have the return of Phyrexia or Yawgmoth, I fear what would happen as we lack the powerful Coalition who were able to take it down. Today's planeswalkers are simply unprepared to handle them.

A shudder passed through the frail body of Issar Roon, and he lifted the scroll to take it back to the shelves. As he slid it back in, he gave a large yawn, signalling the time for you to make a hasty retreat.