in this UHC there are only biomes like big oceans, some swamps and little islands. u start with 1 book and 16 starter steak, if its not possible to make it so that there are guaranteed islands with trees, start with 20 oak logs as well. theres also a probability that theres a ocean monument, u can loot these and get 8 gold blocks for healing. the game would take 30 min till meetup and 15 till pvp. there will be a flat surface of grass blocks at 0,0 to fight on at meetup it would be around 150x150. the game would have ore vein miner, hastey boys, cut clean, gold head and maybe night vision for the players who don't have a light map. if u wanna see some examples i would recommend the 2 vids of TapL on youtube called "minecraft UHC but EVERYONE has to share ONE enchantment table" and "minecraft UHC but the player with the LOWEST health gets fully HEALED every MINUTE..." where the plugin to get plains biomes and other non ocean biomes got glitched and there for get ocean biomes within the UHC's. thx for taking the time to read this, have a nice day!
If a map is made is it possible to make it that the ground under around y-40 (right under the ocean floor) to get a random seed so caves and ores are randomized each time, also remove the ocean monuments since u cant randomize those (i think).