The wearer’s sneak attacks can crit on 19-20* (assuming the target is capable of being critically hit) and all of the wearer’s sneak attacks may be performed without the standard one round of prep.
*If some other crit-enhancing magic can expand one’s crit range beyond 19-20, use whichever crit range is wider. I.e., crit-expanding effects do not stack, they overlap.
Twice per game, the wearer may attempt a sneak attack the same monster twice in the same room–neither instance requires a prep round.









