The Pylon table allows you to combine red power crystals with yellow power crystals.
According to J.D.'s manual, this combination can be used to create a large explosion that can inflict damage on your enemies.
Fin de la quête
Arranging the crystals on the table, you carefully align the colors. As you push the last one into place, a burst of light fuses the crystals together.
The resulting combination is now yours.