Laser

An ultimate weapon upgrade that turns your ordinary Fishing Rod into a high-powered, 256-block Laser Sniper Rifle! The moment you cast your line, it triggers a terrifying Warden Sonic Boom sound effect and fires a massive, continuous beam of blazing fire particles tracking exactly where you look. This heavily optimized add-on utilizes smart block-by-block damage checkpoints to deliver a devastating 40-damage blast, instantly vaporizing all hostile monsters and passive animals in its trajectory while ensuring you remain completely safe from self-injury. Built entirely inside a single, efficient function file to guarantee 100% smooth, lag-free gameplay, this is the perfect tool for wiping out entire fields of mobs from across the map in the blink of an eye.

Do these steps first:

Before creating a world, Turn on Beta API first

1: go to chat bar and type this:
    /give @s command_block
2: inside command block type this:
    function laser

Take note!! always set the command to -------> Repeat, Unconditional, Always active

3: Get the fishing rod 

ENJOY!!!