With the Foehammer archetype, when using an adamantine weapon would he automatically succeed when using the Ground Breaker ability.
Ground Breaker (Ex)
At 13th level, as a full-round action, a foehammer may strike the ground with his hammer. If the attack deals more damage than the floor's hardness, the space he occupies and all adjacent squares become difficult terrain. Creatures in those squares, except for the foehammer, are knocked prone (DC 15 Reflex negates).
Adamantine Weapons
Weapons fashioned from adamantine have a natural ability to bypass hardness when sundering weapons or attacking objects, ignoring hardness less than 20.
Also does anyone know additional ways of getting more attacks in a full attack other than Haste? I want to get full usage of the Rhythmic Blows ability, already have Hammer the Gap and /might/ get a Furyborn weapon.
When I first read this ability I was going to agree with you that an adamantine weapon would by-pass the need to deal damage. Then I realized your attack still needs to deal more damage than the hardness of the floor. Period. No free pass by having an adamantine weapon.
I agree with Prince
Adamantine bypasses hardness up to a certain amount...it does not change that amount to 0 or "item hardness" -20
When I first read this ability I was going to agree with you that an adamantine weapon would by-pass the need to deal damage. Then I realized your attack still needs to deal more damage than the hardness of the floor. Period. No free pass by having an adamantine weapon.There's ambiguity here that you're not seeing. If the floor has a Hardness of 10, does that mean you have to do 11 points of damage or you have to 21 points of damage? In order words, are the rules requiring that you do at least one point of actual damage, or are the rules requiring that you subtract the floor's hardness from the damage before determining whether you've exceeded the floor's Hardness,
If it's the former, then the Ad weapon automatically succeeds providing the Hardness is 20 or less. If its the later, then It seems the benefit of using an Ad weapon is that you get to ignore up to 20 points of hardness from being subtracted from your attack.
The ability is "if you do more damage than the floor's hardness" so if it has hardness 10, then you have to deal 11 points of damage regardless. If it is a normal weapon, then you deal one point of damage and trigger the ability. If your weapon is adamantine then you deal 11 points of damage and trigger the ability.