Invasion of the arthropods

Small spider rooms in caves with tiny spiders that come out of the pods that hang from walls that you can take with you using a silk touch weapon or shears and bug catcher villagers that can trade you bug themed items for emeralds and vice versa and at the last level they can trade you emeralds and string for an invisibility cloak that you can wear instead of ANY armour but endermen can still see you 1 in 30 tiny spiders drop a spider fang which you can combine with a stick to make a poisonous dagger which you can hold in your off-hand and when you attack you will attack with the dagger too.