Hamelin by Porco

Hamelin is designed to be a good lane pusher, using a lot of rat minions. Rats are quick bests, but easy to kill, so hamelin will probably struggle against characters with a lot of aoe. Rats can also be used as an hero killer using vermin control, making them focus a unique target.
Rat tornado will slowly chase enemies, dealing good damages but easy to avoid, powerfull in duo with rooting allies.
Plagued aera is a powerfull tool : it creates an impassable circle around you. Ideal to trap enemies an let your rats and tornado do the job. But allies will be blocked too, so be carefull about how you use it. Hamelin can still escape his own plagued aera using digger, his special mount. Plagued is excellent to trap ennemies with your mmelee allies.
Cholera, his first ult, is a kind off "anti stukov virus" spreding into enemy tesm, dealing damages and canceling heals.
Enraged rats, his second ult allow you to upgrade your minions.
lvl talent is wrong, it should be "Increase" its range by 20%