Crystal cards are variant glyph cards constructed from crystalline science friction material. The placement of the glyphs on such cards lets the crystal act as a resonator for flux, which makes calculating from the card less taxing to an ebb-user.
Crystal cards were banned together with regular glyph cards. They originally sold for 100c per card.
Game Use:
The FLUX cost of ebb abilities is reduced by 1 (to a minimum of 1) when using a crystal card.