Celtic Sigil Trap

Eileen using the sigil to trap Sam.

Lillian's hunter's journal, now owned by Eileen, showing the sigil

The Celtic sigil trap consists of two sigil's drawn in blood a distance apart, for example on opposite sides of a room.. When one is activated by applying blood to the sigil, the person or creature located between the sigils will be frocibly drawn to the other and trappped there

Epsiodes

• 11.11 Into the Mystic: Eileen Leahy learned about the sigil spell from the hunter who raised her Lillian O'Grady. She uses it to trap Sam when she thinks he is a banshee. Later she and the Winchesters use it to catch the real banshee.