Rending Claws

Close combat biomorphs can only be used during an assault. A Tyranid creature can use all of its close combat biomorphs in an assault and is not limited to using one at a time like most models.

Any roll to hit of 6 with a rending weapon automatically causes a wound with no Armour Saving throw allowed. Against a vehicle, any Penetration roll of 6 allows a further D6 to be rolled and the result added to the total score. note that only one extra dice is ever rolled, even if the additional roll is also a 6; no further dice are added.