Think things were getting weird with your new swap abilities? Welcome to the DEBUG WORLD, accessed via a hidden area of the Nexus.
Make sure you have at least 47 cards before trying to find this area.
Once in BLANK, Go RIGHT, UP, UP, UP, and use SWAP to reach the rift portal
Use swap to go RIGHT, UP to reach a second rift portal.
From this area, SWAP DOWN, LEFT, DOWN, SWAP DOWN, SWAP DOWN, RIGHT, SWAP DOWN until you reach the 47 Gate's rift portal.
You'll be in a black and white area. Go RIGHT, RIGHT, UP to another rift portal.
You will now be in a hidden area of the Nexus. Save, and then go to the LEFT to find a rift to reach DEBUG.
Using the Wiggle GlitchEdit
From the Nexus, Swap west until you're walking freely. Go north and east to reach the Second Nexus area from out of bounds (see map of the Nexus). Wiggle through the railings around the platforms to get in bounds in the Second Nexus. Use the left portal.