Grayshield (WT)

Once per battle, at the start of your Movement
phase, if your Warlord is on the battlefield,
you can choose for INDOMITUS CRUSADER
units in the same Detachment as your Warlord
to gain an additional Chapter Tactic until the
start of your next turn, and also gain the benefit
of that Chapter Tactic in addition to any others
they already have.