This Mod was includes only 5 things technically, Theres more things not included in the Description here so ill let you find out your self (here's one try using commands to force put the Excalibur on you head and press F5). Heres a Test Video on my Mod: https://www.youtube.com/watch?v=RH-JLlVTGYI
Added Items: Excalibur, Legendary.
Added Mobs: Frozen Golem, Golem
This mod like my others may include bugs.