Seed: Noxium
Hmm. It has big height differencies.
Other Blaxian seeds:
Blanaxon - vast desert joining hilly plains and the sea, with steep cliffs of sand, and a pumpkin patch plus clay near the spawn.
Bla - I am deeply offended by this boring beach and basically no interesting features.
Ziva - you spawn below a dark overhang, close to a very steep cliff carving into the land. Steep and chaotic terrain. A pumpkin patch near spawn, and some water between large islands with forests.
Klanaxon - not exciting at all. A lavafall near spawn.
Kronaxo - very flat terrain, sand mixing with dirt and a forest nearby (most of the trees stand of the exact same height level). Not that exciting.
Ixnaix - forest islands with large beaches, yawn.
Uxnua - you spawn with some clay in front of you. Several very steep mountains not so far away, and the coast is made of steep hills. A waterfall flows from one of the mountains. There are several open areas near ground level near the steep mountains. Good world.
Blaland - you start at the beach of a dense forest. A large landmass with steep hills and dense forests in the distance has a good looking terrain and coastline.
Naxda - you start near clay and reeds, in mostly plain plains and desert plains.
Hjerit - has a hilly terrain and a steep cliff with a cave just inside its surface, which is possibly very big. Either a large river or a sea seperating you from another landmass similar to the one at spawn, both with somewhat dense forests.
404 is awesome!!
Other seeds:
Laktra - very big hills, steep but climbable.
Creeperland - steep cliffs with overhangs in many places. I found a zombie dungeon at the entrance of a cave not so far from the spawn.
Ninya - turn around, jump over the small hill and look down. The cave reaches down to gold level, and there's lava as well.
Piwate - has an epic cave reaching the lava layer with natural bedrock near the spawn. Can't remember how I found it, but it isn't far away, and has many entrances at the ground level, so it shouldn't be hard.