ItemPropertyBonusFeat

From NWN2Wiki

// Returns Item property Bonus Feat.  You need to specify the the feat
// constant(IP_CONST_FEAT_*).
itemproperty ItemPropertyBonusFeat(int nFeat);

Note: The values for IP_CONST_FEAT_* and FEAT_* differ even for those feats which are common to both, because they are indices for different 2da files (iprp_feats.2da and feats.2da)