War on all fronts

Hive Fleet Leviathan brings death from land, sea and
sky.
Use this Stratagem in the Fight phase. Select an
enemy unit that is within 1" of at least one
LEVIATHAN unit from your army that can FLY
and at least one that cannot. You can re-roll hit
and wound rolls of 1 in this phase for attacks for
LEVIATHAN units that target that enemy unit.