VanillaVerse Wikia

UHC ( Ultra Hardcore ) is a gamemode which was introduced on the Vanillaverse network by Champ in 1.7, It is a game mode where players are placed into a seperate server set on Hardcore mode, and they cannot regenerate health naturally, they must either heal using golden apples, or instant health potions.

The gamemode used to run every Saturday throughout the life-span of 1.7 and 1.8, but when 1.9 came around the UHC Gamemode was slowly retired, however it is making a comeback on the 1.15 server as a trial game was sampled on the server on the 13th June 2020

side note:

butters won like 7 of them, he kicks ass