Opening the door just a crack and readying an action to slam it shut should there be hostiles makes scouting doors a lot easier.
Assassin Article said:Assassins focus their shadow energy through a ki
focus, which is not an object they wield but a reservoir of magical power within themselves. When using a ki focus, an assassin taps into the power of shadow magic and channels it into both implement and weapon attacks.
Any weapon you are proficient in.
So then what are the items? Soul legos?So it looks like a ki focus is entirely internal to the assassin. It's probably comes from the shadowy reflection of their own spirit that an assassin draws their power from.
sorry to be a pain, but I have gone over that and over it...I see where you can enhance a weapon with a ki focus, but not how a weapon is an implement for powers that need one...
You can also use a weapon with which you’re proficient as an implement. While wielding the weapon as an implement, the characteristics of the weapon you use —proficiency bonus, damage die, and weapon properties (such as defensive or high crit)— are irrelevant to your implement powers.
I hope this helps...![]()
Page 7, Implements and Weapons, paragraph 3, first sentence. "You can also use a weapon you're proficient with as an implement."
EDIT: ARGH, Ninja'd by Nikosandros.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.