Sculk Gateway
Sculk Gateway
Unstable gateway
An unstable gateway to the Deep Dark. Stack villagers on it and right-click to send them through. Fades after 3 days.
How to Get It
Other Ways
Find the Deep Dark out in the world. The gateway fades after 3 days.
Inside
Three waves and then the 
Warden. Win and you learn the Sculk Portal. The loot can include:
Echo Shard
Diamond
Diamond Chestplate
Golden Apple
Compass