The video showcases various rare and unusual features in Minecraft, including:
1. An extremely rare air block that can be placed anywhere in the inventory but cannot be seen or placed in the game world.
2. The return of the "Super Secret Settings" feature, which changes the game's textures and was previously removed.
3. A broken feature in the game's physics engine that allows sugar cane to be placed underwater.
4. A magma block that can evaporate water above it, creating a unique effect.
5. A bug in the game's map feature that allows for extremely large maps to be created.
6. A feature that allows goats to be given a large amount of speed and attack power, causing them to launch entities into the air.
7. The ability to create floating redstone torches, which can be used to create compact contraptions.
8. A showcase of the original rabbit model and texture, which was much larger and more disturbing than the current version.
9. The legend of the "killer rabbit", a removed feature that allowed for a powerful rabbit to spawn and attack players.
Here are the key facts extracted from the text:
1. The video discusses various bugs and unusual features in Minecraft snapshots.
2. The "air block" is a rare block in Minecraft that can be placed throughout the inventory but is invisible and cannot be placed in the game world.
3. The air block can be obtained by killing villagers, silverfish, or other entities that do not have a drop.
4. In Minecraft snapshot 13w38, the "super secret settings" feature was added, which changes the game's textures and plays random sounds.
5. In Minecraft snapshot 1.17, the magma block was added, which can absorb the lighting of other blocks.
6. In Minecraft snapshot 16w20, the magma block was made capable of evaporating water.
7. In Minecraft snapshot 1.10, the game's maps were made much larger and more detailed.
8. In Minecraft pre-release 1.7.1, goats could be given a lot of speed and attack power, causing them to launch entities into the air.
9. In Minecraft snapshot 13w01, it was possible to create completely floating redstone torches.
10. In Minecraft snapshot 14w27, rabbits were added to the game, but they were much larger than their current size.
11. In Minecraft, there is a "killer rabbit" entity that has red eyes and can deal more damage than a diamond sword on hard difficulty.
12. The killer rabbit was eliminated from the game because it was too powerful and could spawn naturally, killing players unexpectedly.
13. The killer rabbit can now only be spawned using commands and can attack wolves and foxes.