I'm pleasing to the eye A tool for many absent of mind A tapestry of fickle lies Blind to even the most pensive spies I'm often the breeder of fervent lust But I am by far one you shouldn't trust

Why this works

The answer "appearance" cleverly encapsulates the riddle's themes of perception and deception. The first line, "pleasing to the eye," refers to how appearances can be visually attractive. The phrase "a tool for many absent of mind" suggests that people often rely on surface appearances without deeper thought. The "tapestry of fickle lies" highlights how appearances can be misleading or deceptive, while "blind to even the most pensive spies" points out that even the most observant individuals can be fooled by looks. Finally, the lines about breeding "fervent lust" and being "one you shouldn’t trust" reinforce the idea that while appearances can entice, they can also betray. Thus, the riddle plays on the dual nature of appearances as both alluring and unreliable.