Weaver of Fates

Weaver of Fates - warp charge 6.
If manifested, select a THOUSAND SONS unit within 18" 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.