Rek'Sai's Passive Rework

A second ago I gave my complaint about how weak her passive is ...

Now I want to give an idea for how I think it could be changed to be better and to fit her theme more.

Have it build Fury like it does now, through basic attacks and Unburrow, BUT don't have it apply on Furious Bite. Instead, basic attacks and Unburrow with 100% Fury decreases the cooldown of Furious Bite by 1 second. Using Furious Bite consumes all Fury and heals Rek'Sai for 20-190 health based on level.

The current description on lolwiki doesn't really explain how having less than 100% Fury impacts the amount healed, but I assume it scales so 100 Fury is 100% of the total, and down from there.

I honestly don't think any other stats even need to be changed.

MAYBE the cooldown on Furious Bite might need to be increased by a couple of seconds, if that is even necessary.

This really wouldn't make her overpowered. She would essentially be negating less than 1 basic attack from a champion worth of damage, but I think this would be a lot more useful while clearing, and it would give her passive better application than regaining a few minion hits worth of health after finishing a camp.

Edit: I believe one of the contradictions I would see from this would be that this would decrease the cooldown of Furious Bite, by a lot.

That may be true, and that may mean that Furious Bite might need to be nerf'd as far as damage statistics, (base damage and bonus AD scaling) but I still think this would be a better fit for her thematically.

The nice thing about champions that scale on AD and attack speed is that it is not that easy to get both. Think of the items that give both.

Blade of the Ruined King: Good amount of attack speed, but very little AD Trinity Force: Same as BotRK, but a lot of other stats, some of which Rek'Sai doesn't really use well, and it is very expensive. Essence Reaver: Does give a good amount of attack damage and a good amount of attack speed, BUT only for a short time after using your Ultimate. Stormrazor: Good amount of AD, little amount of attack speed.

With this in mind, increasing the amount of attack speed that Rek'Sai purchases in order to decrease the cooldown on Furious Bite will decrease the amount of gold that she invests into AD, which decreases the amount of damage she deals per use. It balances itself.