Can you please add this plugin?
Name: Random potion effects
link: https://bukkit.org/threads/ran…s-every-5-minutes.488026/ (linked in 4th reply)
Meant for a vanilla game, it provides a fun challenge in giving the player(s) a random effect every around 5 minutes, which can be unexpectedly good or bad depending on what effect and also the situation you're in
thanks