External could work as long as its...well... infinite! Like wind and water and stuff. I like this definition. Can I put it into the OP?
The Minecraft world is 60,000,000 by 60,000,000 blocks.But the minecraft world is 16,383x16,383 blocks in size, which is about 250,000,000 blocks in area.
Can't you just make mini jungle mystcraft books? Or are we not counting the mystcraft effect?One block that I think is safe to add to the non-renewable list is Quicksand which I think is from Extra Biomes.
It is from Infernal Mobs: http://www.minecraftforum.net/topic/1325911-147-atomicstrykers-infernal-mobs-diablo-style-modifiers/There are cobweb-throwing rare mobs in Twilight Forest, so those are technically renewable now. I haven't found one myself but I've seen one in a video at about 30:00. Unless those "rare mob" characteristics are from another mod that isn't in FTB packs?