I found a seed that has it all.

The village is on a hill and is only accesible from spawn by teleporting or walking through spamps, mountains, etc.

There are two lava waterfalls coming from a mountain near the village.

There are floating island and part cut out in the mountain with the lava.

There is a water glitch near the openig of a cave at the bottom of the moutain.

From the top of the mountain in question, you can see in the distance an epic mountain overhang.

There are several small forest biomes near the village, including a forst biome on a hill in the middle of nowhere.

That is all that I have discovered. Leave in the comments below what else you have discovered on the seed.

Village:

x: -695
y: 75
z: 235

Seed: 7355748989028351424