"Here we are. The monster breeding facility."

"..."

'Why here, gem thought you were going to some fighting ground or magic facility."

"First one is dangerous if you fail to control the monster, the second is too expensive for normal use with what we make now. Besides this is one way to test your strength without having to be in danger or having to spend anything. Its free after all to visit and look at the monster breeding facility."

"..."

'Ah, gem understands...so should we go ahead and get this started.'

"Yeah, the monsters here are docile and been arranged to different levels for us already. We should start on the easy ones first and work our way up from there."

"..."

'Hmm...gem can control the bodies of 5 ice poison lizards and 5 more by making them lazy and think it's normal to follow its own kind. these ice poison lizards are too easy.'

"If that's the case. Then level 5 monsters like these are no problem to you. Try these air burst horses, they are all around level 15."

"..."

'body control is easy still, mind control the same. Gem can make 10 air burst horses follow whatever direction gem wants with no problem.'

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"Is it even a little bit more difficult?"

"..."

'Sort of, level 5 to level 15 indeed has some gap. But that gap isn't very big.'

"Hmmm...let's try the highest one we will face there. So...here they are. Level 23 chameleons. Try to control them to change their colors rapidly."

"..."

'hmmm, no problem. Now they flashing all around the colors of the rainbow for 10 of them.'

"Good, so we won't have trouble as long as the leaders are controlled to not run to us. 10 should be enough to make a wall to protect us. To be honest I don't like the job still."

"..."

'hmm...take us to the hundreds of levels monsters.'

"Testing your limits? Sure why not."

...

"This here is a white back breaker squirrel, level 103."

"..."

'Argh, this is difficult. Gem can barely hold it down to stay put after putting my all into it. Having it move or change its mental status is too difficult for me right now. Gem can hold like this for about a minute before gem have to let go.'

"Let's take a step back then. Let's go back to...how about level 80."

...

"Here we are, rock camels level 81. try these on for size.

"..."

'Argh...uh! Gem can do it. Unlike before, gem can hold it down for like half an hour. Gem can make it move too but it's not easy. But it can only be one, forget 2.'

"Hmm...try level 50"

...

"Go ahead, these level 49 and 50 flower pythons."

"..."

'This is interesting...level 50 pythons give me a huge headache. Gem can control at most 2 of them together confidently for as long as gem wants to hold them. Gem can also make those two do whatever gem wants them to do too."

"But about the level 49's?"

"..."

'that's where it gets interesting. Gem can control the maximum 10 with some struggle. But once I got control gem can use them as long as gem want. Making them do my command is not too hard either.'

"So the barrier between level 49 and 50 and from level 99 to 100 is probably a moat for the spike of difficulty. Seems to follow some rule, but I don't know what it is."

"Hmm...."