Champ concept: Mars, The Dersert Wind

Primary Role: Assassin

Secondary Role: Fighter

Abilities:

Passive - Blowing Sands/Desert's Eye

 Blowing Sand - Mars' Basic attack deal an additional % of his base ad and bonus ap to enemies in a cone every 4 seconds in combat.

Desert's Eye -  If an enemy is nearby after 4 seconds sand coats them, applying "Burden of Sand" and slows them for 1 second.  Mars is granted vision of them for the duration of the slow. This effect occurs every 30-15 seconds (based on level) 
   **Note: If multiple enemies are around and can be effected, the enemy closest to Mars is targeted by it**

Q - Gale of the Dunes: Mars brings forth a sharp stab of wind that slices enemies in a short distance in a line, additionally will stun the first enemy for .25 seconds if afflicted by "Burden of Sand" dealing physical damage and, after a .35 second delay, sand bursts forward from the initial location in a cone dealing magic damage. This is treated as an Auto Attack.

W - Quicksand: Mars turns the ground in an area to sand for 3.5 seconds, enemies in the sand are slowed and grounded for the duration

E - To The Sand: If an enemy is effected by Desert's Eye, Mars can blink behind them. Otherwise Mars dashes a short distance dealing damage to enemies passed

R - Eruption of the Dunes: Passive - Mars gains additional base ad, based on % of ap Active - Mars Detonates into a cloud of sand, blasting the area around, dealing damage in a circle and becoming untargetable for 2 seconds. Mars can target any enemy unit in these 2 seconds, blink beside them after a .5 second delay ( appears between his target and location when R is used ). Upon second cast the cloud of sand assimilates quickly into him over the .5s delay, dealing damage to the targeted unit.

Lore Examples:

Allies: Swain, Leblanc

Enemies: Singed, Yasuo, Azir, Xerath, Talon

Mars is a cunning Noxian Mercenary that will never ignore a call to war. Thriving in battle, he enjoys watching his foes pain as the sands slowly rip through their flesh until all that remains is bone. He was born in Shurima but found life there unfulfilling with his dark desire for power. Mars has always used his intellect to evade the mouths of others. Very few outside of Noxian elite and of course Singed know of his capabilities. He has been known to strike when he would never be discovered, and then marvel as others frantically attempt to discover the one who has slain hundreds without a trace of his existence.

>"Who is there? I can feel your bloodlust in the air." -Ionian Elder

Soon he found himself in Noxus, where - with the help of Singed, who's research on bringing nonliving substances to life Mars stole, created a living sand. Though he created it the sand had a mind of its own and soon attempted to engulf Mars but through sheer willpower he overcame it and the two entities merged into one being. Mars found he could turn almost any inorganic material to sand with his own body. Also he can morph any sand into his own body, not only to manifest in another location, but also to change his appearance. His camouflage isn't perfect, but is great for playing with minds as he lures his victims by recreating characteristics of those close to his prey with subtlety and patience. As they chase they never realize the sand slowly latching to their body, ready to rip them to pieces the moment they are alone and exposed.

>"I have a special brew for that thief, he'll soon be a bed of dirt under my feet when he finds out what I have in store." -Singed

An unnamed assassin told of only in dreams, his ultimate goal lies in the Noxian elite. Feeling no true alliance to anyone he deems inferior to himself, he silently plots his rise to power where he can finally reveal himself as the most powerful man alive. His search for power has led him to the ritual of ascension. With the return of Azir he has begun researching ways to harness this great power for himself. He indeed has a great weakness, though those who know it have all been buried in tombs of sand and left to die slowly.

>"Azir, Xerath. If only they knew what lay in wait, they shall return to their tomb." -Mars

Playstyle:

Obviously Iceborn Gauntlet or Trinity Force are must haves, but a nice tweak from that is his base ad increase from ap, meaning he can do lots of mixed damage. If you chose to take him as an assassin typically items like Morellonomicon, Luden's Echo, Void Staff, and Youmuu's Ghostblade are needed. The reason for this build is pretty cool, he has decent aoe with fair AP ratios and gets more base ad for it to boost spellblade. The Youmuu's is added to give him the armor pen where Zhonya's Hourglass or another item may be as well as increase his burst significantly.

For the Fighter builds it would of course start the same, the spellblade passive is a must have. But then we move to Sterak's Gage to further boost his base AD. That would be followed by most likely an Abyssal Scepter, Zhonya's Hourglass, or another item to give some resistances and AP. From here just take it by the matchups on your team and the enemy team.

Counterplay:

Considering his mixed damages he is easy to build resistances for after a few items. One good tank armor item will hurt his spellblade procs even with youmuu and if he builds a last whisper item or black cleaver he loses alot of burst in exchange for the armor pen. From there Magic resistance is a must have. A good counter to him for ADCs and some APCs would be a Guardian Angel as it gives them mixed resistances and even if he kills them they will come back. Locking him down after he goes in is important. He can buy time for his team to follow up with his ult but since he cannot leave the cloud of sand's area it is easy to prepare for him to reappear on a target. He excels against mobile teams with his grounding from the sand and a blink to get behind the frontline and in range for his ult to hit the backline.

Appearance:

Lastly I'll discuss what I see for his appearance. Physique, he is slender and lean with a slightly above average height with deeply tanned skin. Medium length, reddish brown hair that hangs just over his eyes which are brown and also have a red tint ( cause he's a bloodthristy MOFO ). He has chemical burns (from singed) along his left arm that he keeps covered with his sand camo (this also is from where his Q delayed sand comes from and note this means he is left handed). Clothing is dark brown cloth for a shirt with a leather sash with a dagger sheathed on the outside. The pants are a maroon red leather with shin guards and a black stripe along the sides. on his shoulders there is a tattered cloth used as a scarf that falls down to his left forearm. attached to his right arm there is a little pouch with 2 holders (just little tools and such in there). In game a bit of sand should flow around him (just a few particles) and when his q is up there should be sand-skin hiding the burns on his arm.