Hexagrammic Wards

Whenever target 'Grey Knight Psyker' attempts to Deny the Witch, you may roll an addition D6 and discard the lowest result
"There is no chaos spawned horror which can resist our indomitable anger. With undaunted courage we shall prevail, no arcane magicks
shall overcome us. We are the Bearers of Victory!
-Canticle of Absolution