Well, im sorry for a long delay...but, whether you wanted it or not, here it is - the third part of "Mouse and Dragon" growth sequel. Hopes you like in and feel free to comment - what do like, what do you dislike on it...seriously, it would be very helpful for me.
The illustration is made by the talented  Sergio126. Thank you very much.
Enjoy the story!
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Hector was a small mouse who even afraid of his own shadow. Now his shadow cover the mountain in which he had lived all this time, for he had become a huge, muscular giant. Now he was examining what was left of the mountain. Damn, how big this goddamn mountain is!
He flexed his right paw, feeling that his huge bicep go up. Feeling the veins swell in his arm, which had just crushed the huge dragon like a fly. Yes, he was now the largest creature on this mountain. Or maybe in the whole world? Who knows? But…
Hector looked at the part of the amulet in his hand.
-I can always be the biggest, even if someone is bigger than I am now! Hmm, I wonder how this mountain looks from above?
The huge mouse got up on all fours and brought its huge muzzle as close as possible to the peak. So there was only a small area of a couple of meters. My God, it once seemed infinitely large to me, and now even my little finger can completely cover it!
Hector is suddenly overwhelming by memories. Big mice that always laughed at him, his meagre food consisting of a couple of seeds that he managed to quickly stuff into his mouth, until no one really saw his corner, where he huddled at night or when he was sad… Now he stands above them all. Everyone of those who laughed at him is not worth even the dirt under his feet!
Rage seethed in the giant mouses chest. His hand clenched into a fist. For another minute he stared at the mountain...the mountain of his suffering, and then he unleashed his power onto it. From the force of the impact, the mountain shook and began to collapse. Strike, strike, another strike! Hector was angrily destroying his past.
Suddenly something flew out of the mountain! A few silhouettes darted away from the wreckage. Hector looked closer. Dragons! Only 5, but for Hector it was a surprise. He had only known about one of them before! These five were no match for him. To him, they are the midges-size flying reptiles. Even that blue dragon he had crushed was more bigger than this little ones.
The dragons turned and charged straight at him! They were tiny, but they were still charging at him! One brown-scaled dragon flew up close to the nose and spat fire at the mouse. It couldn't hurt the giant, but it made Hector feel angry. How dare they attempt to kill a God, the largest being that has ever existed?
He swung his huge arm and waved the dragon away as if it was just a fly. One is fall, but other still standing. The other dragons swooped down on the hand and began to bite it. Hector thought it would be hurts, but with the size of the bite of a dragon was even...tickled! Oh, boy! As Hector brushed the beetle-size dragons from his hand, he noticed that the dragons hadn't even bitten through his skin! Apparently, his muscles are so strong that even the bite of a dragon does not take it!
Now the dragon five gathered in a new attack. The bronze dragon (apparently their commander) squeaking something to its fellows, but it is so small that Hector cant make out what it is saying. All 5 lizards formed a wedge and went to attack his nose. Maybe they considered it the most vulnerable? But Hector has a plan in mind. Instead of trying to catch the dragons or throw them away, he began to suck in air. The mouse's chest swelling and swelling, until it doubles in size. By then, the dragons were close enough.
-Well, now you will have fun! – flashes in Hectors mind.
The colossal air flow causes the dragons to literally fly off the path of the giant. The dragons tumbles in the air, trying to keep their balance, but the mouse continued to exhale. Hector blew them away like dust, without any effort. How pathetic they are now! Huge once, but all the same pathetic now! Now he is the biggest, the strongest and the most powerful creature in the world!
"I will never bend to anyone, never be small again. I've been dragging out my worthless existence for a long time, but now…
He straightened to his full height. Now it tower over the wreckage of the mountain in all its mighty glory. Hector flexed his arm and looked at her. His bicep is so huge now.... His gaze slid over the remains of the mountain.
"Well, if there is someone who survived my rage, let them watch to me, the perfect mouse.
Lowering his arms, he flex them, straining every muscle in his body. Then, turning his back to the mountain, he put his hands behind his head, showing off his toned back and arms. His entire body is silvery with sweat, because it’s quite hot here. Out of the corner of his eye, Hector saw the dragons coming again. It's good to have an audience after all! Hector smiled. It is time to show the world your new strength. He gripped the amulet in his hand and wished it to grow. The familiar feeling spread throughout the giant body, penetrating every muscle, every nerve, making him taller, stronger…bigger. It grow more and more, towering over the mountain. He wanted to double in size, but…
Suddenly, its growth stopped. The mouse, in bliss without opening its eyes, wished to become even bigger.
- Strange, I thought last time the effect lasted longer.
He tighten his grip on the piece of amulet, imagining it rising higher and higher above the world, but nothing happened. The mouse opened its eyes. Yes, he had almost doubled in height, now the mountain was a pile of rocks at his feet, but...
- I. WANT. MORE!
Enraged, Hector clenched his teeth and wished to get even bigger, but nothing happened. No lightning all over your body, no sensations, literally nothing! Confused, mouse looked at the piece of amulet in his hand. Is it broken?
However, a second later he saw whats the problem.
It was a bronze dragon. He clutched the amulet and tried to pull it out of the mouse's hand. Green lightning zigzagged across the lizard's body. It had grown noticeably - now it was almost the size of Hector's finger phalange. Apparently, the amulet had already affected him. Now His small body is swollen with muscle, but in the heat of the battle with the giant hand, he did not even notice it, continuing to unsuccessfully pull the amulet from the death grip of the titanic mouse. Hector chuckled. Such a baby will not be able to prevent his growth! He has outgrown everyone on this mountain, and no dragon can prevent his triumph!
With the free hand mouse grabbed the dragon and tried to pull it away from the amulet. When your opponent is so small, it is very difficult to capture him. Hector tried to grab the winged asshole with two fingers, but his fingers were too big to grab such a small thing. The dragon continued to inflate. Moreover, it seems to have accelerated its growth. The dragon began to grow in spurts, as if sensing danger and trying to become...stronger. Just as he had once tried! It has already become the size of 2 phalanges of a finger ... the height of the entire finger...and even more!
"No, one overgrown dragon was enough for me!
At that moment Hector manage to grab the lizard by the torso. Wow, that a muscles! Under both fingers, he felt the titanic dragon's muscles, which grew larger and larger with each passing moment. A slight flush passed over the mouse's face. He don’t want to admit it, but deep down...he want to be that dragon. The mouse snatched the enlarged dragon more comfortably with his whole hand and yanked it away from the amulet.…
Instead of pulling the dragon away from the amulet, it hung in his hand, clutching the damned source of growth in its paws. At the same time, it began to grow even faster, filling all the free space in Hector's hand.
"I'll have to smash him!" - thought the mouse and squeezed his hand. By this time, the dragon had almost completely filled the palm of his hand with its muscular bulk. Hector squeezed the lizard with all the strength of his arm. He felt the dragon's body struggle under the pressure of his hand and...throbbing, it grew larger and larger. Hector brought his hand closer to his face and squeezed it as hard as he could. The bicep on his arm tightened so that every vein was visible. His whole body tensed with the effort to crush the bug, a strained cry escaped from his chest, and sweat trickled down his shoulders, but…
Slowly, the fingers began to move apart. The bronze dragon's body itself looking bigger, but the dragon hardly looked tired. The size of his body overpowered the pressure of his fingers. Now, with his muscular hands, he held the fingers of the giant mouse as if they weighed nothing, and continued to grow. In his desperation, Hector began to feel that the more pressure he put on the dragon, the faster it grew. The lizard's face is set in a triumphant grin. He grow in spurts, as if it were being pumped from a huge pump. Only instead of air, he has the purest muscles.
The dragon no longer held the amulet. He just stood on it, holding it with one paw, as if no one can stop his growth.
Push
It's already bigger than my fist
Push
Greater than the length of the palm
push
bigger than my head
Bigger than my bicep!
Damn
In desperation, Hector tried to hit the lizard with his fist, but it stopped him with both hands. On the face of the dragon, it was clear that it was now hard for him. But literally through 2 push growth, he without tension held his hand with both hands. Not stopping its growth *Hell, he was already a quarter of my growth* the dragon looked him straight in the eye.
-What a great power ... is hidden in you ... but ... * push*I'm stronger... * push*I am a dragon!
The dragon dropped from Hector's hand and swoop up. As in a slow-motion shot, Hector saw the dragon, whose body is constantly passing discharges of green lightning, rushing to the sky.
- No! – no! " he cried, and seized the fleeing dragon by the leg. He didn't grab it very well – he grabbed a piece of the amulet. The dragon flapped its wings furiously, trying to dislodge the mouse. Hector felt the force pulling him toward the heavens become more and more palpable with each burst of growth. With the last of his strength, he yanked the amulet on himself and ... it worked! He was able to snatch it from the dragon's hind leg, but…
Before it went into the hands of the mouse, the amulet suddenly flared up and hit the dragon by the green lighting. Hector clutched the amulet to his chest, but all his attention is on the dragon. The flash from the amulet threw him, but he landed on his feet. The lizard was already half Hector's height...
Suddenly, a spasm went through the dragon's entire body, causing it to grow another quarter of its height...and another...and another…
He stood up and walked toward Hector
On the floor of the head below...on he floor above the head...head and shoulders above…
The dragon laughed.
-"I'll be more than just the strongest dragon! I will become a God!» - that was sounds like a thunder.
The lizard was bigger now! And with every moment it grow bigger. He reached out a clawed paw and tried to snatch the amulet from the mouse, but Hector is already growing. A familiar feeling filled him and he begin to grow in size. Hector is growing fast, but he could barely keep up with the dragon – it had become shorter, first by a head, now up to his chest. And yet it continued to grow! Hector looked down. The clouds were already chest-high...waist-high...my God, how huge they had become! He looked up and saw a colossal dragon. Hector continued to pull the amulet from his hands, but so far he can’t do it – the mouse is don’t want to part with its charm.
- "Damn it,» the giant mouse thought, - «I don't reach his chest anymore!» Apparently, I'm already half of his size! When will this damn growth stop?
"I want more ... power…GIVE it back! » - the dragon shouted
At this very moment, the dragon began to slowdown in growth. He tore the amulet from Hector's hands. By this time both had reached colossal proportions, the clouds barely hiding their feet. They towered over the entire planet!
"This is my chance! More!
Obeying the order, the mouse's body began to grow more. A smile plays on his lips. No, now he would humiliate himself before no one! I will outgrow this dragon, and then this damn planet! Hector had already noticed the fright on the face of the bronze giant, who was about to become a dwarf. Here it is-the triumph of the winner! He is almost the size of a dragon again, but ... suddenly, the dragon bite his hand! With a cry of surprise, Hector fanned the dragon away, slapping it across the face with his fist.…
At the same moment, the lizard snatched the amulet from his hand. Lightning flashed through his body again. Hector lunged at him, trying to grab the amulet while it was still the same height as him…
As if in slow motion, he saw part of the precious amulet fly straight into the dragon's mouth.
*Gulp*
That was a horror for Hector. No. No, No, No! After all, all of this, the victory was already in his hands. Hector charged on the dragon, pounding it with his hands, feeling a shiver run through the giant's entire body. The dragon threw him off with extraordinary force, as if the mouse weight no more than a feather. Hector fell to the ground and watched the dragon grow bigger and bigger...and bigger.
-"Yes, Yes, Yes...YES!" I AM GOD! -"Now I will realize what I have dreamed of!" the dragon exclaimed, growing larger. I'll rule the whole planet! Although why the planet? I'LL RULE THE WHOLE WORLD!
"What have I done?" mouse thought.
The dragon is already the size of the moon…

TO BE CONTINUED…