Thyme

Thyme is a surreal weapon, which stutters and distorts in the wielders hand.
Flickerstrike:
Thyme is a +1 dagger of arcane make.
When you make an attack with Thyme, you may
choose to make a second attack with it as a free
action, and a spinning temporal duplicate appears.
If both blades hit, resolve damage as usual. If either
blade misses, neither blade does damage. In either
case, the duplicate disappears, and Thyme takes its
place.