I have monster synthesis simulator

Story of: I have monster synthesis simulator

Lin Shu woke up and became the son of a down-and-out monster merchant. His family ran a monster store that was on the verge of bankruptcy and owed a lot of money.

Fortunately, he got a monster synthesis simulator, and he can synthesize new monsters at will!

[Green Liquid Slime] + [Poison Bottle] = Toxic Slime (Level B)

[Rotten Skeleton] + [Rusty Iron Sword] + [Undead Heart] = Skeleton Swordsman (A-Level)

[Slime Slime] + [Old Iron Crown] + [Horror Fruit] = King of Slime (Grade A)

[Fighter Corpse] + [Demon Wolf Head] + [Wolf Tail] = Horrible Werewolf (A Level)

…

Lin Shu: "Knight, do you need a mount? Come and see this B-level undead war horse. What, you don't like it? Come on, do you want the A-level three-headed wolf king?"

Lin Shu: "Dwarf forging master, I heard you want to buy a monster that can forge iron? I have an A-level giant hammer tree king..