A unit of Sisters of the Thorn knows a single, randomly generated spell from either the Battle Magic or Elementalism Lore of Magic. If you wish, this spell may be discarded and the unit may instead select the signature spell of its chosen Lore of Magic. The unit may cast this spell as a Bound spell:

• If the unit includes a Handmaiden of the Thorn, it may cast this Bound spell with a Power Level of 1.

• If it includes both a Handmaiden of the Thorn and a standard bearer, it may cast this Bound spell with a Power Level of 2.

• Otherwise, the unit may cast this Bound spell with a Power Level of 0.