Ferrystone
Two places can trade. Study the Reckoner locks and read their stone.
How to open it
- Read with the Loupe: Reckoner Stone or Reckoner Stone
- Notes: Artifice — 4, Basics — 2
- After the entries:
Through-Mirrors, 
Reckoner Locks
Pages of the entry
A pair of Ferrystones swaps two places: on a redstone pulse everything in the three-by-three-by-three cube above one slab — blocks with their contents and creatures — trades places with everything above the other. A lift between floors, a hidden room, a workshop rolled in and out, a store you swap in.
Set the slab into the floor: the cube is above it, the slab is the middle of its floor. One Confluence gives two slabs; click a placed one with the other — it remembers it, and once placed they are a pair. A pulse at either slab swaps, no more than once every two seconds. Whoever stands on the slab and in the cube travels with it. The owner is whoever placed it; sneaking with an empty hand, they open it to guests.
Shift
Strata
DriftOnly within one world, and only while both ends are loaded. Each slab pays its own chunk's flux: a tenth for every block of its cube, four times that for a block with contents; no murk. Bedrock and anything unbreakable, spawners, portals, the mod's place-bound blocks and someone else's land do not travel; a cube edge must not cut a door, bed or chest in half. In the Stillness the slabs freeze.