Ores, mobs, loot tables, and advancements have a chance at dropping a boss Keystone. These keystones open up warps for players to fight a difficult monster to be significantly rewarded. Upon killing the boss, the player is teleported back to where they summoned the gate. The keystone will be destroyed if the player does not use it within a time frame. These keystones are meant to be a distraction and diversion from everyday play to gear up and fight the boss quickly.
make gateways to go to dungeons or warp crystals