Quote from CrystalPriizon
After playing this I realized how long it's been since I last kept up with anything Minecraft related >_>
So I had some questions after playing. I looked around and answered a few, like renaming tools with anvil(which isn't in my creative inventory for some reason), using commands with command blocks, beams of lights with beacons. But I couldn't figure out how to do something like teleport a player when day comes around, unless you can somehow tie it into a command block. And I believe not breaking blocks and no creeper block damage comes from adventure mode, but haven't tried it yet. And I haven't tried customizing what villagers trade, but is that also done through adventure mode?
Lot of it is done with a mix of Command blocks and MCedit. There are filters to customize Villager trades and such. Not being able to break blocks is from Adventure mode