The Logrusfoils are the Chaosian counterparts to the Patternblades; Primal Weapons of Chaos, each containing a piece of the Logrus. They constantly shift in form but possess a unity of function, and like the Patternblades each has a signature power, although unlike them they seem to have no elemental affinity. They are capable of igniting the blood of those descended of the Blood of Order. They are the sibling blades of the Logrusfoils of New Chaos, and are numbered among the [Great Weapons]?.
Two of the Logrusfoils, Thought and Memory, were used by Annadil to open the Gate of Revolution beneath the Air Pattern of Tir'Na-Nog on the Second Day of Darkness. These two Logrusfoils appear, along with the Patternblades Greyswandir and Werewindle, appear to be the 'keys' neccessary to open the Gate.
There were 13 Logrusfoils forged in total for Dios's children, but the blades have dropped repeatedly on and off the stage of history over the centuries.
At the time of Forth the Nine Riders, in the aftermath of Logruswreck, the disposition of the known Logrusfoils are as follows:
- Courage?, wielded by "the smiling slayer," apparently Hendrake Agent Kenji. The Logrusfoil of House Suroth.
- Cunning?, the Logrusfoil of House Tremere. Apparently in a shadow halfway between the Courts and Yig, inhabited by sentient punctuation. Seen in a vision in the Sacred Flame of Helgram by Sousuke.
- Determination, the ancestral Logrusfoil of House Aesir, recovered by Chloe and given to Random, who gave it to Shinobu Minor.
- Fear?, hidden by "the Hanged Man." The Logrusfoil of House Formorian. Apparently stuck in the back of the Hanged Man's knee, spotted by Orien and his Jewel Angel Peorth. Yes, the giant Hanged Man of Yig. It was that simple. A flunky of Outsidery-fragment Derith removed it to try to attack the Hanged Man's rope, but was beaten down. Asuka had it briefly, then passed it over to Soujirou, who now bears it.
- Hope, the Logrusfoil of House Danaani, taken by Tomos from Fate-Suzuka, lost, and currently in the hands of Asuka.
- Insight?, the Logrusfoil of House Darios. Still claimed by Loewen of Helgram.
- Leadership?, the Logrusfoil of House Hendrake. Held by House Hendrake, last seen in the hands of Koa of Hendrake.
- Love?, the Logrusfoil of House Olympus. Held by House Olympus at last sight.
- Memory, the Logrusfoil of House Alars. Borne by Lord Kunou of Alars.
- Peace?, the Logrusfoil of House Jesby.
- Thought, Logrusfoil of House Nurgal, taken by Fate-Suzuka. Presumed destroyed by Primal Chaos.
- Trust?, the Logrusfoil of House Vanir. It is now borne by Mitsune.
- Vengeance, the ancestral Logrusfoil of House Helgram, held by Lord Loewen.