I bolded the bits I think are relevant - namely that the critical has to be scored with the weapon. The ability to use a weapon as an implement means exactly that. You're still using it an implement not as a weapon. Of course, the FAQ on Weapon Focus has muddied the waters somewhat here...PHB said:A high crit weapon deals more damage when you score a critical hit with it.
So any power being used with a high crit weapon as an implement would deal weapon damage (plus the extra)... rather than the damage of the power. This just seems incredibly odd to me.PHB said:A critical hit deals maximum weapon damage and an extra 1[W] at 1st–10th levels, an extra 2[W] at 11th–20th levels, and an extra 3[W] at 21st–30th levels.
Its interesting as this came up in our group and I was initially think opposite of you, gribble. And with the errata of Weapon Focus, I thought maybe my initial thought was correct.
As it's a property and you gain all properties (but not powers) when using a weapon as an implement, you would gain it.
PHB FAQ said:When you are using a magic weapon as an implement, like a Holy Avenger or a Pact Dagger, what benefits do you get from the weapon?
You gain any bonuses listed under Enhancement, Critical and Property.
Right, I see it now... was looking at the Swordmage Powers section, which also discusses implements. Very interesting.The "Implement" section of the Swordmage summary says that you add any extra damage granted by properties when using the blade as an implement.
It'd be silly for a swordmage to get brutal 1 on implement attacks with a khopesh.