Red card

There are two methods for obtaining this very secret card.

Directions: Method 1
From the Bridge Nexus waypoint:
 * 1) Right
 * 2) Right
 * Up
 * Up

Swap up and right, past the bridge railing. You must reach the spot all the way to the right and two tiles down from the chest.

Transition screens to the right, then perform the "falling in a pit glitch" by returning to the nexus from the menu while in the falling animation. If done correctly, you should be placed on the isolated island with the chest, to the right of the 49-card gate. The chest contains the card.

Requires the swap upgrade.

Directions: Method 2
Requires a minimum of 47 cards to get past the 47-card gate. From the rainy forest Nexus waypoint:
 * 1) Swap right
 * 2) Go up and scale the tower
 * 3) Enter the rift
 * 4) Right
 * Up
 * Up
 * UP
 * 1) Enter the teleporter
 * 2) Right
 * 3) Up to another teleporter
 * 4) Down, through the linear path
 * 5) Reach the 47-card gate
 * 6) Go through the teleporter past the gate

You'll be back in the Nexus. Go right, and perform the "wiggle" trick, heading up. You should reach the isolated area with the chest.

Requires the swap upgrade.