You can use this plugin to Toggle PvP, Build for players, slowly tpall players. This plugin is mainly developed for Events.

Commands:
/event pvp - toggles PvP
/event build - toggles Build
/event reload - reloads the config of the plugin
/event slowtpall - Tps players, but slowly
/event mutechat - mutes chat
/event hide - hides all players without permission "Event.seePlayers"
/event alivelist - shows alive players
/event revive <player> - revives specified player
/event reviveall - revives all players in the server
/event tpalive - tps all alive players to your location

Permissions:
/event - event.toggle
Buliding / Breaking while it's turned off - Event.BuildBypass
MuteChat bypass - Event.MuteChatBypass
See players (while hide is true) - Event.seePlayers
Using blocked commands - Event.useBlockedCommands