What Weapon/Armor abilities work off of Enhancement Bonus? [3.5]

[aleucard]

Exactly what it says on the tin. This is mainly for something to take advantage of the need for a 3+ bonus to use Greater Aumentation Crystals from MIC, but still. Absolutely anything that works off of the Enhancement Bonus of your weapon/armor. I know of Defending (http://www.dandwiki.com/wiki/SRD:Defending) and Assassination (http://www.wizards.com/default.asp?x=dnd/we/20070314a), but I can't think of any others.

[Skevvix]

Ghost Touch lets you add the enhancement to your touch AC vs Incorporeal creatures.

Only thing off the top of my head.

[torrasque666]

Spellstrike(Cities of Waterdeep)
Can move some or all of the weapon's enhancement bonus to saves against spells and SLAs. Interesting to note is that it implies that if you use multiple ones, they stack due to the line "This bonus stacks with all other bonuses that benefit the wielder's saving throws."


Since this same language is found in defending....hmmmm.....

I wonder how these two would interact.... could you move +5 to both? or +2 to one, +2 to the other, leaving you with +1 on the weapon?