SUBTERRANEAN ASSAULT

Use this Stratagem in the Reinforcements step of
your Movement phase, when a < HIVE FLEET>
TRYGON or < HIVE FLEET> TRYGON PRIME
model from your army is set up on the battlefield
using its Death From Below ability. Select one
friendly < HIVE FLEET> unit with the Troops
Battlefield Role that is in Strategic Reserves.
Set that unit up anywhere on the battlefield
that is wholly within 9" of that TRYGON
or TRYGON PRIME model and not within 9"
of any enemy models.