This special rule confers the following effects:
- Friendly Tyranid units within 12" of a Tyranid unit with this special rule have the Stubborn special rule and change their Leadership (LD) Characteristic to 10 unless higher.
- Friendly Tyranid Units within Synapse automatically Rally at the start of their movement phase.
- Tyranid Units that are not within Synapse range of a model with this special rule have the Frenzy Special Rule instead and use their base Leadership (LD) Characteristic.
- The unit with this special rule gains the Synapse keyword.
- Tyranid units with this rule gain the benefits of the Deny the Witch and Adamantium Will special rules.