In the room, Evan opened a thick magic book, he turned to the Animagus page, it showed every step one must take.
After confirming everything, he took a deep breath and picked up the potion and drank it.
It was like a cup of strong liquor, dark gold syrup flowed down his throat, a powerful mana began to appear from his body, it grew stronger and stronger.
The Mana was like a surging river, it constantly gushed out of his body.
He breathed in; he could feel his body change.
His body was full of restless mana, the mana began to overflow from him uncontrollably. It gave Evan the impression that he was capable of anything.
But the feeling was very short, he felt his body had reached its limit, the mana within his body felt very uncomfortable. He needed to use this mana on something or he feared he might die.
"Animagus!" said Evan as he drunk another potion.
His body began to change as soon as his voice fell.
Powerful mana filled the room in an instant, under the impact of the mana, everything in the room was scattered.
Even the things that were kept outside the room where affected by the mana. Dobby quietly opened a small gap in the door, he was too terrified to go inside, his hands were holding the door handle firmly, two gigantic eyes were staring inside and looking at Evan.
In the centre of the room, Evan's muscles were cracking. It was as if he was a slime, his whole body was morphing.
When he used the Polyjuice potion last year, Evan felt like his skin, blood, and bones were melting.
But the feeling was much stronger compared to the Polyjuice potion, the intense pain almost made him faint. Evan bite his lip, he told himself 'he must insist, if I faint now, I fail, then everything I have done will be for naught.'
He concentrated and tried to control the spell.
In his insistence, his body shrunk, it began to change to an animal.
His bones morphed, black fur appeared on the surface of his skin and a pair of big furry ears grew on his head.
After about twenty minutes, there was a new shadow in Evan's bedroom.
The restless mana gradually calmed down; the effect of the potion gradually faded. Evan knew he was successful, he shook his head, his hands now had claws and everything in the room had become gigantic to him.
Although it isn't clear what the animal was the size was certainly small.
Evan remembered what the book said about Animagi: Animagus transformations are usually limited to non-magical creatures, this is because the wizard's mana and magical creature's mana have a subtle but essential difference, if you become something such as a Phoenix, Dragon, etc, it will have unpredictable consequences.
In addition, Animagi cannot change into any random animal, the transformation is based on one's character and weight.
Evan's body was smaller so he turned into a smaller animal.
The key is personality, he is more cautious so he thinks he turned into an animal that is more cautious.
"A small, non-magical creature with a cautious personality...God, am I a mouse like Peter Pettigrew!" Evan's heart sank, that would be the worst result.
He wanted to become a bird the most, it was the most convenient, but given his strong fear of heights, this possibility is not likely. But as long as he is not a mouse any other animal is ok. Because he came from China before crossing over, he thought he might become a panda!
But based on his size, a panda is not possible, "maybe..."
When Evan was thinking, the house elf entered the room while trembling, he looked at Evan in horror and cautiously approached.
"Oh, my God, sir has turned into a black cat!"
"What, I became a black cat?" Evan sighed in relief knowing he hadn't become a rat.
A black cat was an unexpected result.
In the wizarding world, it has been a symbol of expelling evil spirits since ancient times and it has great significance. Black cats are widely believed to have strong mana, Evan has looked through all the records of Animagi in the last millennium but no witch or wizard has turned into a black cat.
"Mr. Evan Masson's magic has run amok," said Dobby. "Stupid, useless, you could have done something," screamed Dobby loudly while pulling his ears.
"Stop, Dobby, my situation is excellent, you don't have to do anything, don't punish yourself," said Evan hastily, but no words came out, only a meow.
"Dobby knows, Mr. Evan Masson must go to St Mungo's Hospital for Magical Maladies and Injuries! Dobby must save Evan Masson"
Hearing Dobby wants to save him made him think of last year when he wanted to save Harry, he didn't want to die at the hands of a house elf.
He cannot change back to his original form for now but he saw the other wasn't going to wait for him to change back naturally.
Evan jumped to the side to dodge Dobby.
'Damn what can a black cat do besides be cute?!' thought Evan
With the reflexes of a cat, Evan is very agile, he dodged Dobby a few times but he saw that the other was about to use magic, he knows if Dobby does, he won't be able to escape.
Evan suddenly jumped on the balcony through the open window.
This feeling is wonderful, Evan is like a real cat, he then smoothly jumps down to the first-floor's windowsill, he is not hurt one bit.
Seeing that the other is following him, Evan did not delay one bit, he ran and after going around a corner, he hid behind a garbage can.
After a few seconds, he saw a large teary eye house elf running along the street.