Empyric Surge

Use this Stratagem in your Psychic phase,
after a GREY KNIGHTS PSYKER unit from
your army has manifested a psychic power.
Until the end of that phase, when a psychic
test is taken for a friendly
GREY KNIGHTS PSYKER unit within 6"
of that unit, add 1 to the total
Arcane power swells within the sons of Titan.