options:
logo: &c[&bInvis Skript&c]
permissionm: &4You do not have access to this command!

command /invisible:
permission: op
aliases: /invis
trigger:
make the player execute command "/effect give @s invisibility infinite 255 true"
send "{@logo} - &cYou are now invisible" to executor

command /visible:
permission: op
aliases: /vis

trigger:
make the player execute command "/effect clear @s invisibility"
send "{@logo} - &aYou are now visible" to executor