Okay, I've got another conundrum
Would it be worth it to sacrifice +1 attack and damage, 1 point of Constitution and Mark of Warding to be able to get Resist 3 against any enemy I hit until the end of my next turn (at will/continuous)?
To explain, it'm thinking about Multiclassing Assassin (Dex 13 requirement, still get Fighter (Wis 13) with Windrise Ports) and using an Iron Body Ki Focus (Dragon 382).
This would cost me one feat (losing Mark of Warding), a +1 to hit and damage for now, seeing as the Focus is more expensive than a regular weapon (to use it's property I need to use it's enhancement bonus on my weapon attacks instead of the weapon's regular enhancement) and 1 point of Constitution (still start with a 17, so 18 at level 7) since I need to boost Dex to 13.
If I hit an opponent, I gain resist all equal to 2+enhancement bonus of the Ki Focus against all his attacks until the end of my next turn (continuous effect, so applies to every attack I make). This seems rather good for a Warden, since they have a decent amount of attacks that target multiple foes.