I don't have the books in front of me, but I'd swear that a monk got to use his ki focus on unarmed attacks. I thought it was in the unarmed attack description.
I think I got lost in here somewhere, let me explain what I'm shooting for. The club's magical property is that when wielded it grants a +2 damage bonus to the flurry. I also have a feat that grants a similar +2 bonus to flurry damage if I'm wielding a mace. So that's a total of +4 to flurry damage. That's why I have the mace, not for it's actual properties. As it stands the item would be level 3 forever...
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Am I missing something? Does my plan not work for some reason?
I apologize, I guess it's been a while since I've read the unarmed combatant class feature since I never intended to use an unarmed attack. You and other people are certain right, your Ki Focus will add to your MBA. Apologies for telling you differently.
As far as the Ki weapon is concerned, you are certainly correct that it add +2 to your FoB power, however, you still cannot use both your Ki Club Magic Weapon and your Hammer Ki Focus for the same attack. Just be aware that you can only use one or the other, but not both for a single attack. Even if you still use your Hammer Ki Focus for your attacks, you will still gain the benefits of your Crashing Tempest Style feat since you can still deliver the attack with your club, you just won't gain the benefit of the Ki weapon (an additional +2 to FoB dmg) because you can't also use the magical portion of the weapon.
I think this is very confusing, but it breaks down like this. You can only use one magic item to deliver attacks (certain powers/feats/features excluded). However with a monk, you can use a Magical Ki Focus and still deliever the attack using a weapon (club or spear for example). You're not actually attacking with the weapon since a Monk's powers are implement based, but that's how you still gain the benefit from the "weapon" FoB feats because you're still wielding the weapon.
Hopefully this is a little more clear? I'm certainly not trying to tell you that you can only have one item or another, merely informing you that you can only use one magical property per attack, not a combination of the two.
Is that a little more clear?