User blog comment:Commander Marko/Singed, The Mad Chemist (Rework)/@comment-4888212-20130702142730

like it very much, however the potion of rejuvenation is way too strong. it will give him unlimited durability and sustain in lane. while i like the "choose your potion" thing, the hit to reduce CD and esp the rejuvenation are simply too strong.

lets go through it:

16sec CD: max cdr: 9.6 sec in this time, you channel for 1 second => 8.6 seconds, the 5 second timer starts. you are able to hit 4 times in 5 seconds without any AS. 4.6 seconds, while the effect lingers for 5 seconds.

this allows you basically to heal up by 4% of your maxHP every second after level 9. (as long as you have a minion to slap).

without having a target to autoattack, you would still have more than a 50% uptime from the potion ,making up insane sustain.

an other way would be making the heal as "% missing HP instead of % max HP).

this would make it dangerous to hit something when you are very low, as the enemy could come to kill you, and would heal you less easily to the top of your HP to hardengage/trade again in lane.

imo there are certain ways to nerf it: remove the mana return and make the spell far more expensively scaling in levels.

nerf the numbers on mana and health returns respectively, or higher the CD and the effecttime while keeping the HP number the same.

imagine 9% CDR from runes/masteries and a kindlegem just at minute 3, giving you a 75% uptime. this would make singed a hell to play against, while furtherencouraging proxysinged (what nobody really wants to happen).

how about following:

30sec CD, not reducing in levels. manacosts: 80/95/110/125/140 (which doesnt hurt since his innate kinda makes him want to stack mana anyway, but until you have enough mana, it will reduce his laning potency).

heath restored over 12 seconds: 6/8/10/12/14% depending on level.