Effect:
You can teleport anywhere you want on the map
Tut:
Make a portal & place a TNT a couple of blocks away and
setup your second portal somewhere else. Go thru the first
portal & halfway thru the teleport activate the TNT for
explosion. Once u make it to the Nether World the portal will
be blown up aka broken. so then theorefore your second
portal will now act as your first. Go back thru the portal in the
Nether World and when u come back you will be moved to the
2nd portal u made because the first one was unable to be located.
Note:
Unless u can mod this yourself I will release this in my next version of Eazy2Build. If you can mod this the item name is portal in 360 Revolution. But in the mean time my GT is Dark Lygofast and am more than happy to show u demo
or you could just take the x and z coordinate of your nether portal divide it by 3 and with the answer you come up with for both x and z make a portal at those coordinates in the nether, thus you have nether travel. its really simple although i probably didnt explain it all that well.
i got an idea what if you put a piston and a button then right as it’s about to teleport press the button then the piston moves the block under it away then you don’t have to blow anything up