RivalDuel
About
A complete competitive PvP duel plugin for Paper *.21.* servers. Features 1v1 challenges, GUI-based queue matchmaking with sword and crystal PvP modes, tiered matchmaking (LT/**/HT1-HT3), automatic arena rebuild after crystal fights, standardized kit application, live sideboard scoreboards, tier-based leaderboards with top-10 placeholders, spectator mode, admin setup commands, and full ****** support for arenas, kits, messages, and blocked commands.