Well, in a game such as oitc, /leave will come in handy. You could do /server factions on the middle of the game, and leave. You can't do /server oitc while in an oitc game. In factions, if you do /server XXX in combat, you will die because you are connecting to another sever through bungeecord.
Thanks Harry for all your support and hard work for the server. We all really appreciated. Your the best YouTuber with Jerry ever :)
typing /server gives you a full list of available commands for different servers, for example, /server skyblock1 will take you directly to skyblock1 /server factions will take you to hardcore factions but /server survival will take you to peaceful factions. ^_^