This plugin would generate a random number anytime RND(Low)(High) is written. It wouldnt use a / to use. The plugin would scan any chat for the RND and then replace it with a random number between a low and high number. Needs to work with server signs.
So say I did the command /svs add <server> /give <player> RND(1)(10) RND(5)(10) , bound it to a sign and then have someone use it, the sign would then give the player item 1-10 and would give them 5-10 of them.
It could be set it to work with specific commands. Set up /rgive to work like he described having it choose random numbers and then make the player run /give with those numbers.
This will require new commands for every function where he wants the random number, and he didn't wanted any commands