Swap

Swap relays blocks from afar: the block it hits gives way to another. It is Shift on a lens. Your off hand decides which: hold a block in it. If there is none, the lens takes the block from the slot right of the Conduit. The old one drops as an item; the new one comes out of your inventory.

ShiftTide

Swap leaves chests, furnaces and anything holding something alone, and stone harder than an iron pickaxe takes. With Survey it trades a whole layer — that is how floors and walls are relaid. Next: "Survey" and "Washout".

ShiftCraft