This minecraft seed 4629091465175177150 features a huge mushroom biome, perhaps the largest I have seen in the game so far. It really is large, and worth checking out, tons of mooshrooms etc…
There is a surface dungeon in the desert at X:-279 Z: 604
Huge mushroom biome at X: -40 Z: 56
This minecraft seed spawns you right in the middle of a huge NPC village (X: 199 Z: 272), the village spreads across two biomes which is pretty cool. Part is in the desert biome and part in the plains biome. In the middle of the village is a chasm that leads to a large cave system. I was told there were a bunch of spider spawners in the caves but I didn’t find them, maybe you can.
In the desert that the village touches is a surface zombie spawner dungeon, at X: -73 Z: 358
In the plains biome that the village is in I found possibly the biggest network of ravines that I have ever seen…i can’t even count how many there are. But it is absolutely massive. And at the bottom I found some diamonds. The entance to this ravine is only slightly open and can be found at X: 382 Z: 261
~Thanks to max for submitting this minecraft seed