The Invincible Daily Life of the Murloc Lord

A fisherman hooked a big fish, but unexpectedly, a black light flashed on the fish, and he came to another world and became a small lord. Coincidentally, there was also a group of murlocs in the territory. Ding, the golden finger came to my account. I easily raised swarms of murlocs, all of them with unparalleled fighting power, capable of tearing apart giant dragons with their hands. Is this invincible? Oh, but it seems like I'm not omnipotent. Forget it, being invincible is enough, anything else is optional. Ps: After reading a lot of articles where the protagonist already has a strong golden finger and needs to have strong personal abilities to be happy, I wanted to write a protagonist who has mediocre abilities and weak abilities in speaking and doing things, analyzing situations, controlling subordinates, adapting to circumstances, and debating and writing, but who can live a very happy life relying only on the golden finger.