Dimension Time

This mod adds a seemingly simple feature, after 5000 ticks in any dimension (not yet configurable) you get teleported to the overworld. Simple right? Well 5000 ticks isn't as long as it seems, that's only 4 minutes and 10 seconds! But don't wory, with some quartz and a bottle you can extend it by 50 ticks! There are more potions like it, each with varying difficulty to craft.
With planks and stone you can make a Cosmic Clock to see how long you have, and if you get endstone you can make a world-anchor to set a single dimension as your home, letting you stay without restraint.