In this section, I will put some unique knacks. The creators will be noted after the description of that Knack. All these knacks are only available in this book, you won't find them in other Earthdawn books nor websites.
The Straining Sight Talent Knack allows the Archer to sustain more longer the duration of Mystic aim. For additionnals points of strains, the Archer is able to use this talent for 2 or 3 rouds without any severe damage. If the Archer want to use it for a second round = 2 strains, for 3 rounds = 3 strains, for for rounds = 5 strains. The mechanic is like improving a talent , the strain is cumulative so if an Archer use it for 3 consecutive rounds = 1 + 2 + 3 = 6 strains. The advantage is that you spend an action the round you start it, then you can use its powers without making any new tests.
This Knack was provided by its creator, Torkana, Elven Archer.