Overworld Server Friendly Max XP (1.13+ Goldfarm) Bubble elevator aggro system. puts out lots of xp and drops. Unrivaled by other designs for efficiency, output, ease of use, and mindfulness of lag. Upgradable by adding more layers. The portals require 18,134 obsidian, or 5 double chests, 13 stacks, and 22.
From 0 to 30 levels in 1 minute, 15 seconds
Get 225 level 30 enchantments per hour (1 every 16 seconds)
Mend 33 durability per second (Mend a pick from 1 to 1561 in 47 seconds)
About 130, typically ranging between 115 and 145
Rare spikes above 150 when "off", due to orbs/mob drops resting on trapdoors in the cactus chute. These do not cause server lag, and eventually despawn.
More info from 5am the designer here: http://forum.vnlla.org/viewtopic.php?...
Their twitter: https://twitter.com/skunkybass303?lan...
Their instagram: https://www.instagram.com/skunkybass/