Sanctuary

Sanctuary has a warp charge value of 6. If
manifested, pick a friendly Grey Knights unit
within 12" of the Psyker. Until the start of your
next Psychic phase, the invulnerable save of that
unit is improved by 1 (to a maximum of 3+).
Models that do not have an invulnerable save
instead gain a 5+ invulnerable save.