New Sadistic/ Masochistic Bruiser/ Tank Champion

I have not decided on anything definite such as name, appearance, or specifics on the abilities but these are my thoughts on a new tank/ bruiser champion. This champion's passive would increase his damage by how many attacks have hit him. it is important to be the amount of times damage has been dealt to him rather than how much health he has lost because this way even minions can stack insanity stacks which would be hard normally in top lane early game(explanations on insanity later). For this he would also have the need for higher sustain that also makes sense for his buildup. In addition to increased damage from more attacks the lower the health he has the more resist he has. This way he can start with a typical amount of health for a tank. In addition to these he would have an insanity gauge or stacks rather than mana or rage. The insanity gauge can be used to activate certain abilities and would increase on both receiving damage and dealing damage. The reason for it being "insanity" goes into the lore idea I had for him. He's both a sadist and a masochist so he enjoys receiving pain because he feels like every hit he takes the stronger he can become. But then there's the sadist part. In order to properly tie this in why not give him multiple personality disorder or maybe a shared consciousness. The more damage he takes the more insane he will become and once he hits a certain limit of insanity he will snap and turn into more of a sadist. I felt like this would be a good concept for either an ultimate ability or a toggle able passive. When he's in masochistic mode he would have increased damage on hit at its minimum. Then this would leave room for his increased resist on lowered health to be at its maximum. When he's in his sadistic mode it would be the reverse. This is why I believe the shared consciousness idea is better than the multiple personality. It would make more sense since he's both a masochist and a sadist if he's actually two people simultaneously. So to explain the switch it would simply be giving the main body controls over to the masochist/ sadist over the other. As for his attacks, I believe it would be interesting to make him a close ranged fighter as a masochist yet a ranged fighter as a sadist. This could be accomplished multiple ways. One of which would be to give him a sword that is shorter as a masochist and has a smaller range and longer as a sadist to have and increased range. Another way I could think of is for the masochist to have the same exact weapon as the sadist however the sadist would throw it instead of whacking the enemy. This also is similar to how mundo works in a way since he can throw his clever but he also bashes people with it. The last way I've come up with for this concept would be simply to make the sadist a marksman and the masochist a cc fighter. As for the weapon of choice for the sadist's gun it would most likely be something that can cause a larger area of damage faster. For this a rocket launcher or laser would work best however since both of these concepts are already quite prevalent in league maybe something with a little more oomph would be necessary. Perhaps he can have a missile launcher on his back instead that way it has a faster fire rate than a rocket launcher but deals slightly less damage over a wider range. As for the masochist weapon I believe a sword or axe would be best picked but we also have to take into consideration that he still is part sadist. For this I believe a weapon that is brutal but still close ranged would be most effective. In my head I cannot imagine this champion wielding an axe or a sword as they are too simple for him which I will explain why later. Possibly instead electric gloves/ gauntlets would be more his style. As for his abilities I believe that they should be different depending on whether he's a sadist or masochist seeing as though his auto attacks are different for each. This is a concept similar to nidalee. As for his damage type I believe for the concept ad scaling would be more important. Next lets go into the lore of this champion a little more. I was thinking a mad scientist would fit the bill. League has a lot of smarter champions in it that are quite scientifically knowledged however they are not all nearly as insane as this character is meant to be. For this I believe a champion with a war soldier background would work but as the only survivor from a special ops group of sorts. A group that specialized in causing immense amounts of pain to their enemies hence where the sadisticness comes from. Before the last war he fought in ended he was captured by the enemy and tortured. This is how he became a masochist and this is also where he developed his second personality that he shares consciousness with. It could have been an experiment that they did on him where they fused his mind with another person's that may have been imprisoned there for a lot longer than him. He would then proceed to escape the prison using his scientific knowledge. He would gather supplies and cause mass destruction to the people who held him captive. I know this concept is quite farfetched however I feel that having a champion like him would be fairly interesting and have a very unique play style.