A long time ago in Cracow lived a nobleman callnamed Mr. Twardowski.

Therefore, he decided to use the knowledge from books forto summoning the Devil.

When the Devil showed up, Twardowski told him about his studies about andnd his craving for supernatural powers.

The Devil offered him a deal -: his soul for these powers.

The devil was very happy, because he thought that he would easily get a new soul soon and so he agreed.

However, he did not know, however, that Twardowski had no intention of visiting Rome.

We avoid using "however" at the beginning of sentences when writing.

According to their agreement, the Devil was obligated to serve Twardowski in doing any kind of magic.

The Devil suspected that Twardowski willould use magic for ungodly purposes because people are vicious and evil creatures.

But he was wrong.

I understand that you're using this for dramatic effect but I wanted to make sure that you knew that we also avoid using "but" at the beginning of sentences when writing unless it's fiction like this.

First, Twardowski created a big rooster, on whose back he wasould traveling around Poland, helping people and animals.

That made the Devil extremely madangry, but he couldn't do anything about that, except waiting.

For many years, Twardowski was avoidinged going to Rome.

As soon as they entered the doorinn, the Devil showed up in his true form and began to laugh loudly and said:when he said, "I have you now, Mr. Twardowski.

This is how we punctuate what people say.

- I have you now, Mr. Twardowski.

You finally kepthonored the terms of the contract.

The Devil grabbed Twardowski rapidquickly and started to fly with him above the Earth, towards Hell.

But nNot all conditions were fulfilled, however.

So he dropped Twardowski onto the Moon where he is still is today.

There's the another version of this legend, where the name is not mentioned in the agreement and the Devil dropped Twardowski because he started to pray, but I like this version more.

A long time ago in Cracow there lived a nobleman callnamed Mr. Twardowski.

"called" is technically correct but named is more natural

After many years of research, he had deduced that magic was impossible without supernatural powers.

Once again, technically correct just doesn't sound very natural

ThereforeSo, he decided to use the knowledge from his books forto summoning the Devil.

"Therefore" in this context is much too formal

When the Devil showed up, Twardowski told him about his studies and about and craving for supernatural powers.

Twardowski agreed but with one condition: The Devil can take him to Hell only when Twardowski appears in Rome and the Devil calls him by his name.

It's implied whose name he's calling

The devil was very happy, that because he would easily get a new soul soon and agreed.

The Devil suspected that Twardowski willould use magic for ungodly purposes because people are vicious and evil creatures.

First, Twardowski created a big rooster, on whose back he was travelinged around Poland, helping people and animals.

That made the Devil extremely mad, but he couldn't do anything about thait, except waiting.

For many years, Twardowski was avoidinged going to Rome.

One day the Devil came up withhad an idea.

There's the another version of this legend, where his name is not mentioned in the agreement and the Devil dropped Twardowski because he started to pray, but I like this version more.

A long time ago in Cracow lived, a nobleman callnamed Mr. Twardowski lived in Cracow.

After many years of research, he deduced that magic was impossible to cast without supernatural powers.

Therefore, he decided to use the knowledge from books forto summoning the Devil.

When the Devil showed upappeared, Twardowski told him about his studies about and craving for supernatural powers.

The Devil offered him a deal - his soul in exchange for these powers.

Twardowski agreed, but withon one condition: The Devil can take him to Hell only when Twardowski appearsed in Rome and the Devil callsed him by his name.

The devil was very happy,full of glee at the thought that he would easily getsoon gain a new soul sooneasily, and agreed.

However, he did not knowwas unaware that Twardowski had no intention of visiting Rome.

According to their agreement, the Devil was obligated to serveassist Twardowski in doing any kind of magic.

The Devil suspected that Twardowski willanted to use magic for ungodly purposes because people are vicious and evil creatures.

First, Twardowski first created a biglarge rooster, on whose back he was travelingled around Poland, helping people and animals.

The usage of "first" at the start of the sentence suggests that there will be a "second" or "third" to follow, of which there is none, so I would avoid using that.

That made the Devil extremely madfurious, but he couldn't do anynothing about that, excepbut waiting.

Diversified word choice!

For many years, Twardowski was avoidinged going to Rome.

One day, the Devil came up with an idea.

He turnransformed into a peasant and came to Twardowski, asking for help in healing his sick mother.

As soon as they entered the door, however, the Devil showed upappeared in his true form and began to laughcackle loudly and said, exclaiming:

- I have you now, Mr. Twardowski.!

This inn is called 'Rome'!

The Devil grabbed Twardowski rapidswiftly and started to fly with him above the Earth, to Hell.

But not all conditions of the contract were fulfilled.

So he dropped Twardowski on the Moon where he is still remains today.