This is my first time doing a build (: So yeah (:
I did not copy from other guides (: Base on my own experience (:
Have fun (:
Please rate it ;)

Singed, The Mad Chemist

Singed descended from a long line of Zaun's revered chemists. Even in his youth, his talent for concocting potions far outstripped that of his peers, and he quickly distinguished himself from his less extraordinary chemist compatriots. It came as no surprise to anyone when he was selected for apprenticeship by the infamous Warwick, master apothecary on a lucrative retainer with the Noxian military during their campaign against Ionia. Within Warwick's laboratories, Singed toiled without end, rapidly absorbing every detail of his predecessor's deadly craft. Singed had little concern for the death and destruction that was the fruit of his labors. By the time the curse of lycanthropy descended to claim his master, Singed was poised and eager to make the transition from workhorse to innovator; he was ready to share his genius by bringing a new brand of suffering to the Ionian front. His zeal for progress was unquenchable, and when suitable test subjects proved to be in short supply, the eager chemist was often thought to turn his volatile mixtures on his own flesh.

When the uneasy peace created by the League of Legends settled on the world, Singed journeyed to the one place where he was still able to showcase his beloved craft: the Institute of War. By this time he was barely even a man, his body both ruined and sustained by his ingenious craft. A thousand burns - accidents of shadow and flame - mar his ravaged form, and exposure to such harsh conditions has deadened his nerves, hardened his body, and strengthened his physique, transforming him into a veritable juggernaut. This, combined with a formidable arsenal of deadly concoctions, makes Singed a force to be reckoned with on the Fields of Justice.

''My deadliest dose shall bear my patron's name!'' - Singed, having just christened the Insanity Potion

This is Singed, The Mad Chemist intro :D
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Poison Trail - Leaves a trail of poison behind Singed, dealing damage to enemies caught in the path.
Toggle: Singed lays a poisonous trail that deals 22/34/46/58/70 (+0.3) magic damage per second.
Cost 13/13/13/13/13 Mana per Second

Range 20

Mega Adhesive - Throws a vial of mega adhesive on the ground, slowing enemies who walk on it.
Leaves a sticky area on the ground for 5/5/5/5/5 seconds, slowing enemies in the area by 35/45/55/65/75% (lasts 1/1/1/1/1 second after leaving).
Cost 70/80/90/100/110 Mana

Range 1000

Fling - Damages target enemy unit and flings them into the air behind Singed.
Singed flings an enemy over his shoulder, dealing 100/150/200/250/300 (+1) magic damage.
Cost 100/110/120/130/140 Mana

Range 100

Insanity Potion - Singed drinks a potent brew of chemicals, granting him increased combat stats.
Singed drinks a potent brew of chemicals, granting him 35/50/65 Ability Power, Armor, Magic Resist, Movement Speed, Health Regeneration, and Mana Regeneration, as well as reducing Crowd Control effects by 10/20/30% for 25/25/25 seconds.
Cost 150/150/150 Mana

Range 20

Empowered Bulwark - Increases Singed's Health by 2.5 for every 10 Mana he has.

Pros
Good at escaping (:
Poison does lots of damage (:
Good Ultimate (:
Cons
Fling has a very short range ):
Not a good in farming ):
Very low base damage ):
Mega Adhesive hard to target ):