Goku - Fabric Mod for 1.21.1 | Player Games

Added a server-side mod named Goku with a new item goku:blue_beam_weapon (uses a diamond sword visual).
Use /goku give or standard /give to get the weapon; it stacks to one.
Left-clicking while holding the weapon fires a blue beam up to ~32 blocks, stops on solid blocks, and deals 5 hearts of damage to the first living target hit. Beam plays guardian-style sounds, shows blue flame/end-rod particles, and has a short cooldown to limit spam.
Right-clicking with the weapon toggles flight for the player (enable/disable ability and flying state) and sends an action bar message; works for survival players too.
Notes: Beam fires when you attack a block or entity (not on empty-air swings). Flight stays enabled until you toggle it off or the server resets; creative/spectator flight isn't altered when toggling off.