The addon is a java mod that was ported to bedrock with the permission of the original author who is fish0016054, the addon adds a variety of mobs, items and blocks that we will see in each update of the addon.
MOBS:
Mycosis: mycosis a hostile mob, its behavior is a bit similar to the zombie, sometimes it can appear with weapons or another item, mycosis has a special ability to give you poison in a radius of 2 blocks so it is dangerous, it has a Bright blue mushroom variant, appears in the swamp and cave biome. Frigid: The Frigid is a hostile mob that slows down when it hits you so you have to avoid it, if you activate the experimental mode the Frigid will appear with a weapon, it appears in frozen biomes. Sludge Lord: The sludge lord is a hostile mob that will attack the player and the villager, it has several forms of attack, it is capable of summoning lil'sludge, it appears in the swamp biome. Lil'Sludge: lil'sludge is a hostile and tame mob, it will only appear if it is summoned by the sludge lord or by the pestilence wand.
Undertaker: The undertaker is a mob that is generated by the world with probability of appearing, it has the ability to summon 4 unburieds which can appear with weapons, it can raid an entire village if there was no golem. Unburied: The unburied is a mob that only appears if summoned by an Undertaker or the Midnight Morne.
ITEMS:
Wand of Pestilence: The wand of pestilence is a staff that summons a lil sludge and is repaired 25% with silky sludge and its elaboration is the following. Midnight Mourne: It is a melee weapon that deals 6 damage, is repaired for 25% with Undying Heart, and summons 4 unburieds. Intestine: It is an object dropped by some mobs, if you open it, random objects will come out of it. Frozen Dagger: A dagger that deals 6 damage and is crafted as follows. Frozen Thigh: It is a melee weapon that does 8 damage and can be eaten. Shattered Ice: It is an item that can be eaten and used in crafting Undying Heart: Dropped by the Sludgelord and Undertaker, it is used in various crafting. hyphae: It is used in crafting like the one above. Silky sludge: It is used in crafting like the one above.
Cordy placed and Glow Shroom, dropped by mycosis, can be placed.