The Underworld Mobs

The 3 hostile mobs added to the Underworld are Spirits, Crawlers, and Dwellers. Spirits would be a transparent-ish blue tall and skinny creature, face resembling a skeleton, would attack if the player on sight. They are a very quick mob, capable of catching up to the player while sprinting, if not killed over a random amount of ticks, it will let out a scream allowing other spirits to try attacking. Once killed, they will let off a particle called Spirit Essence, which can be collected in bottles and used for arrows, creating the new effect, Haunting, basically it makes player’s hallucinate spirits attacking, doing not more than one or two hearts of damage, lasting 5 seconds. The next mob is the crawler, a maroon colored mob that resembles a creeper with limbs and sharp ends on its legs, allowing it to crawl up walls to attack the player, unlike the spider it can jump off the wall to deal damage. Once killed it has a chance to drop one of its limbs, creating a spear type weapon, the last hostile mob is the dweller, a simple mob which digs into grey sand and attacks the player if stepped on, endermite shaped body. Then comes the challenger/guardian. He will spawn at the underworld temples, to challenge the player to test them. They can mimic many behaviors from multiple mobs, skeletons, breeze, ect. Once killed they will drop the challengers key which will grant access to the underworld, again via very spiraly staircase.