Tyranid Warrior Brood

Tyranids within 12" of a Synapse Creature gain Fearless - the units never fall back and automatically pass any moral or pinning tests.

Tyranids within synapse range are immune to instant death caused by weapons with a Strength double the creature's Toughness. Note that this does not apply to Ripper Swarms.

A Synapse creature is able to cause all Spore Mines within 24" to detonate in the Shooting Phase (Choose one mine in the cluster as the initial detonation point). Note that this counts as a shooting attack, so it may not shoot or use other psychic powers in the Shooting phase. Other creatures from the same brood may still fire at a different target is desired.

Units with this rule roll an extra D6 when rolling to move through difficult terrain. In most circumstances this will mean that they roll three D6 and pick the dice with the highest score.