When you Ferocious Bite, you have a 15% chance per combo point spent to flicker to an enemy within 30 yds and deliver an Unseen Attack. Unseen Attack damage is reduced if less than 5 combo points and 50 Energy are spent on Ferocious Bite.
Unseen Slash
Slash the target, dealing 22 Physical damage and an additional 48 Bleed damage over 6 sec. If this effect is reapplied, any remaining damage is added to the new Bleed.
Unseen Swipe
Swipe nearby targets, dealing 66 Physical damage. Damage reduced beyond 5 targets.