Dragon Style
Benefit: While using this style, you gain a +2 bonus on saving throws against sleep effects, paralysis effects, and stunning effects. You ignore difficult terrain when you charge, run, or withdraw. You can also charge through squares that contain allies. Further, you can add 1-1/2 times your Strength bonus on the damage roll for your first unarmed strike on a given round.
Dragon Ferocity
Benefit: While using Dragon Style, you gain a bonus on unarmed strike damage rolls equal to half your Strength bonus. When you score a critical hit or a successful Stunning Fist attempt against an opponent while using this style, that opponent is also shaken for a number of rounds equal to 1d4 + your Strength bonus.
If you have both does the 1st attack add 2x str & all other attacks add 1.5 str, or do all attacks deal 1.5 str.
it stacks in my my mind all of your attacks do half of your strength modifier that is a base line then the first attack also adds another 1.5 damage extra.
Speaking of...
and no, I'm not trying to break anything here, but how would this interact with Martial Mastery?
Martial Mastery (Combat, Human)
You further broaden your study of weapons to encompass multiple similar weapons.Prerequisites: Martial Versatility, fighter level 16th, human.
Benefit: Each combat feat you have that applies to a specific weapon (e.g., Weapon Focus) can be used with all weapons in the same weapon group.
From the PRD site.
I'm curious, because while the style feats are Combat feats, when they specify unarmed strikes ( a weapon in the close weapon group) does that meet the requirements for Martial Mastery of applies to a specific weapon?
I'm inclined to say yes, but I know Dervish Dance was explicitly ruled on as not interacting with Martial Mastery, which is what brings this question up.