Zac needs a new passive asap

Lets face it Zac's passive Cell Division freaking sucks and is holding him back from being an amazing champion I have an idea for a new passive which I would like to call Residue when Zac hits an enemy with an ability he leaves a small portion of himself on that enemy which he can absorb back with his next basic attack against that enemy healing himself for a small amount and dealing extra damage with that basic attack. The second part of Cell Division works perfectly fine though and can be kept and worked into the new Residue passive. When Zac reaches 0 health he leaves residue of himself which slowly recombines over time allowing Zac to reform.