Infinity Stones
Six Infinity Stones are kept around the world. There is one of each in a world, so only one player can hold any given stone.
| Stone | Where it is kept | What it does in your hand |
|---|---|---|
 Power Stone | The Orb, in the Nova Corps vault on Xandar, out in Space. Take it from its pedestal, and the Corps turns on you. | Use: a shockwave that tears through everything in front of you. Cooldown 4 seconds. |
 Space Stone | The Tesseract. The Red Skull keeps it: beat him in his Hydra lair. | Use: step through to wherever you're looking, up to 64 blocks off. Cooldown 1.5 seconds. |
 Reality Stone | The Aether. The Hollow King keeps it, in Asgard. | Use: everything round you comes apart for ten seconds, frozen and harmless. Cooldown 8 seconds. |
 Soul Stone | On the altar at the top of Vormir, a rare black spire in the Overworld. It takes a pet you love. | Use: tear the soul out of what you're looking at and keep its life for yourself. Held, every blow you land heals you. Cooldown 4 seconds. |
 Time Stone | The Eye of Agamotto. The Mystical Guardian of a Ruined Sanctum keeps it. | Use: everything round you all but stops for eight seconds. Sneak + Use: wind your own health back five seconds. Cooldown 10 seconds. |
 Mind Stone | Loki's sceptre. Loki keeps it, in the Frozen Sanctum. | Use: whatever you're looking at fights for you for a minute. Sneak + Use: let them all go. Cooldown 6 seconds. |
Getting them
- Kept by a boss. The Red Skull, the Hollow King, Loki and the Mystical Guardian each drop their stone when you beat them, if it is still theirs. A villain who is only leading a raid does not drop it. Whenever a stone is taken, everyone in the world is told who took it.
- The Power Stone. It sits on the Orb Pedestal in the vault at the heart of the Nova Corps city on Xandar. Use the pedestal to take it. The moment you do, every officer on the planet comes for you.
- The Soul Stone. A soul for a soul. Use the Altar of Vormir with a pet of yours (a tamed animal) within 10 blocks, and the altar takes the pet and gives you the stone. Without a pet it tells you what it wants. Once the price has been paid the altar is cold.
How they behave
- The stones belong to the Classic Superheroes universe. With that switched off in a world, the altars only say that nothing stirs and the bosses do not drop theirs.
- Held in the hand, each gives one power on a short cooldown (the table above). Held in your hand, the Soul Stone also heals you by half of what you hit for.
- You keep your stones when you die.
- On the ground a stone cannot be burnt, blown up or left to despawn. If one falls out of the world it goes home: the Orb back to its pedestal on Xandar, the rest back to whoever kept them, to be won again.
Outriders
Thanos sends his Outriders after whoever carries Infinity Stones. They come down out of the sky in a streak of fire, four-armed and eyeless, and go for the stone-bearer before anyone else. They leap, and they do not stop. It is one of the incidents, and it runs on its own clock: every 7 to 14 days for each player holding a stone, with two Outriders plus two more for every stone you carry, up to 14. Players nearby are told, and you have ten minutes. You can spawn them with an Outrider Spawn Egg.
Nova Corps
The Nova Corps officers of Xandar wear blue and gold, with the Corps' star on the helmet. They leave you alone unless you take the Orb or hurt one of them. Then they shoot gold blaster bolts from range and fight hand to hand up close. There is a Nova Corps Officer Spawn Egg.
Thanos
The Infinity Gauntlet is a separate item. Thanos drops it, and you can set it on his throne to fight him again.