I've seen many people hinting to this suggestion, but I don't ever remember coming across a thread devoted to this. The concept is lava creatures. Blocks that, during rounds, can roam around and attack unsuspecting users. Quite a few different server software, including the one ours is based on, has this option already with zombies, birds, sharks, etc. For example, we could have a lava shark that swims in lava trying to find victims that it can prey upon. Another example is a Killer Toads from Lava God: Amphibious (green block) monsters who mainly stay at the top of lava, has the ability to hop over 1 block above lava level and creep around on dry land to seek out players (to suck their brains out or I don't know, haha. use your imagination ). This thread is devoted to that basic concept and I would love to hear people's thoughts on how to improve it, or whether the idea should be scrapped. Please be sure to read the important note:
This idea has not been thoroughly thought out, so I understand there are a lot of holes that need to be figured out. Such as, players can build around to avoid them. I'm hoping that this thread will be one where those holes can be covered and a cohesive, fun, and interesting concept would emerge