Rank 1 Increases damage done by your Swipe ability by 10% and reduces the chance enemies have to detect you while Prowling as if you were 1 level higher.
Rank 2 Increases damage done by your Swipe ability by 20% and reduces the chance enemies have to detect you while Prowling as if you were 2 levels higher.
Rank 3 Increases damage done by your Swipe ability by 30% and reduces the chance enemies have to detect you while Prowling as if you were 3 levels higher.