Gateways & Bosses
Real structures you find out in the world open gateways on your table. Beat what's inside and the loot comes home with you.
Unstable Gateways
Finding a Trial Chamber, the Deep Dark, an Ocean Monument, or a Woodland Mansion out in the world puts an Unstable Gateway on your table for 3 days. Stack villagers on it and right-click to send them through. They face three waves and then a boss, and they heal a little between waves.
Win, and the loot comes home as one stack, and you learn that place's Stable Portal.
| Structure | Gateway | Boss | Portal key | Loot it can give |
|---|---|---|---|---|
| Trial Chamber |  Trial Gateway |  Breeze |  Trial Key | Trial Key,  Iron Ingot,  Crossbow,  Mace, and  Golden Apple |
| Deep Dark |  Sculk Gateway |  Warden |  Echo Shard | Echo Shard,  Diamond,  Diamond Chestplate, Golden Apple, and  Compass |
| Ocean Monument |  Ocean Gateway |  Elder Guardian |  Prismarine Shard | Prismarine Shard,  Cod,  Gold Ingot,  Trident, and Golden Apple |
| Woodland Mansion |  Mansion Gateway |  Illusioner |  Emerald Block | Emerald Block,  Emerald,  Totem of Undying, Crossbow,  Iron Sword, and  Rabbit's Foot |
Stable Portals
A Stable Portal lets you go back whenever you like. Build one from a Villager, 4 Cobblestone, a Diamond, and the place's key. Each run through it costs another key.
Uses up Cobblestone, Diamond, and Trial Key.
Learned by winning a run through the Trial Gateway.
Uses up Cobblestone, Diamond, and Echo Shard.
Learned by winning a run through the Sculk Gateway.
Uses up Cobblestone, Diamond, and Prismarine Shard.
Learned by winning a run through the Ocean Gateway.
Uses up Cobblestone, Diamond, and Emerald Block.
Learned by winning a run through the Mansion Gateway.
Bosses
40Breeze
Boss of the Trial Chambers. Its wind charges knock fighters off balance.
40 health, 4 attack
70Warden
Boss of the Deep Dark. Its blows blind, and its sonic boom reaches anyone.
70 health, 7 attack
24Elder Guardian
Boss of the Ocean Monument. Its slow beam hits very hard and leaves fighters fatigued.
24 health, 4 attack
45Illusioner
Boss of the Woodland Mansion. Shoots arrows, blinds your party, and hides among illusions. Only the real one can be hurt.
45 health, 4 attack
Redstone Caves
The 
Redstone Caves are a wave area: five waves of 
Redstone Cubes, with 
Redstone Golems as minibosses. Stack villagers on the card and right-click to send them in. The card never fades, so go back as often as you like. Golems sometimes drop a 
Charged Redstone Core.
You can find the Redstone Caves in the 
Caving Pack, on 
Cave trips with an Iron Pickaxe, or as the reward for the Into the Depths quest. Clearing them can give:
Copper IngotThe Redstone Monstrosity
Stack a Charged Redstone Core with a 
Summoning Orb. Evokers sometimes drop the orb. After 30 seconds the Redstone Monstrosity bursts onto your table. It slams the ground, calls Redstone Cubes, and is shielded while any of them are alive. Beat it with your villagers to finish Chapter 1.
Uses up Charged Redstone Core and Summoning Orb.
Learned by getting your first Charged Redstone Core or Summoning Orb.
150Redstone Monstrosity
Slams the ground, calls Redstone Cubes, and hides behind a shield while they live.
150 health, 5 attack
It always drops the 
Monstrosity Helmet. The rest of its loot can include a 
Redstone Awakener, Emeralds, Diamonds, and a Golden Apple.
What Comes Next
Chapter 1, Humble Beginnings, ends with the Monstrosity. Chapter 2 heads to the Nether.