So do you only get the ~: Recover 2 from Feeding Frenzy the one attack where you exhaust the card? Looking at Jabba's ability, elite officers, and Feral Swipes, it would be beneficial to have more than one chance a round to recover. Normally you're only going to get once attack a round

I believe the surge for recover 2 is always available for the creature unit you have attached feeding frenzy to

It should be the same as zillo technique. The top part is all that goes away with the exhaust. The second ability is independent. If the card depleted then the rest of the card would be unavailable. But exhaust only stops the one part of the ability from being used over and over in a round.

Abilities that do not have an exhaust cost are available even when the card is exhausted. (The +2dmg ability has a surge cost instead of exhaust cost.)

If a card is depleted, all of its text no longer exists.