What is Carve and Spit for?

[Giantbane]

It absolutely does matter how much it restores. Using CAS for MP specifically WON'T give you the mana do another drain. It will get you a single unleashed, but you would need 5+ targets for it to overcome using DA + CAS...

I'll take another look at this when I've got more time. You're probably right here, but I'd want to think about this a little more.

Once again, you're ignoring the opportunity cost here. This isn't a gain over waiting for your TP to restore so you can do your single target combo. TP is regenerated every 3 seconds, so Unmend would have to do more than 190 potency in order to overcome this [226 (average potency per GCD from a Delirium combo) - 36 (The amount of average combo potency lost by waiting an additional .5 seconds per attack)]. You can also be gaining MP from Siphon Strike during this time. Even if you went for multiple rotations like this and delayed Carve and Spit in order to have enough mana to use DA on it, you would come out ahead over using it to restore MP and spam Unmend / Unleashed.

But you're looking at this wrong. If you use an unmend, then you don't have to wait .5seconds for the next set of attacks. Let's say you've got enough TP, with regen, that you can execute 5 attacks over the next 6 GCD. Now, you can either wait for TP to regen and only execute 5 attacks OR you lead with unmend and you then get unmend + 5 TP based attacks. Since you're TP starved and can't execute any more normal attacks, the unmend becomes "free", at least in terms of time spent on the attack, since it doesn't hinder your already slowed method of normal GCD attack execution. At this point the only consideration is mana. If you're also running low on mana, you have to prioritize, and for damage done / mana spent, unmend and free unleashes win.

Carve and Spit
Cons:

the name is also kind of silly