Description: He gains a natural weapon from the chart below as a secondary natural weapon of his choice. This natural weapon is always the same. Attacks with secondary natural weapons are made with a –5 penalty on the attack roll, no matter how many there are, and add only 1/2 the grim’s Strength bonus to damage. This penalty applies even when the creature makes a single attack with the secondary weapon as part of the attack action or as an attack of opportunity. Grims with the Multiattack feat take only a –2 penalty on secondary attacks.

Special: This Alteration may be taken up to four times. Each time it is taken, it applies to a different natural weapon on the chart.