Two Cards

This is just another version of the "Two Aces" method and provides lines with the same probability distribution.
Instead of using two regular playing cards, I've devised a design for two special cards so that you can use them to cast hexagrams.
The pictures below shows the faces of the two cards. I've also made them available as 300dpi images in case you want to print them with your printer or through a custom playing cards service.

 

To cast a hexagram proceed as follows:

1. Shuffle the two cards rotating one of them while shuffling (this is important);
2. Turn them and put them one on the other so that two symbols in the upper left corner can be seen;
3. Draw the same line you see on the top card;
4. If the two symbols in the upper left corner are the same, it's a moving line.
5. Repeat steps 1-4 other five times drawing the hexagram from bottom to top.

The image below provides some examples:

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