Mansion Gateway
Mansion Gateway
Unstable gateway
An unstable gateway to the Woodland Mansion. Stack villagers on it and right-click to send them through. Fades after 3 days.
How to Get It
Other Ways
Find a Woodland Mansion out in the world. The gateway fades after 3 days.
Inside
Three waves and then the 
Illusioner. Win and you learn the Mansion Portal. The loot can include:
Emerald Block
Emerald
Totem of Undying
Crossbow
Iron Sword
Rabbit's Foot