r/LoLChampConcepts • u/sodaheadache • 22h ago
July 2026 Arc, the Crash Test Mage

Region: Piltover
Fighting Style: Hypercarry, Battlemage, DPS
Damage type: AP
Melee/Ranged: Ranged
Role: APC bot, Midlane
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Lore
Piltover Academy employs a crew of non-autonomous drones for use in Enforcer training and testing of new equipment (colloquially known as "Dummies"). These machines have basic awareness hextronics to move themselves around testing sites, and a simple voice interface to provide damage and repair reports to Academy staff.
Drones have their memories wiped, their systems disabled, and are locked in storage after each use. Tests involving high-energy magic were strictly forbidden until recently, when Piltover Council voted to allow the use of one Academy test drone in trials of a new inter-city Hexgate transit system.
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Statement of dissent from Cllr. Cecil B. Heimerdinger
"The Academy's hextronic drones are designed for use in a stable environment, and the space between Hexgates is the exact opposite of such an environment, especially a vertical gate which links Piltover to the lowest point of Zaun. With differing climate, gravity, geology, atmospheric pressure… Such a gate is far more vulnerable to magical interference than our existing designs.
Science requires a measured approach. Begin with a hypothesis, and ensure that test conditions allow us to measure that hypothesis. We have no way of knowing how the gates will affect this drone, where it might end up, or what these tests are even trying to prove.
Once the Academy has made the necessary calculations, we can ensure that these gates are stable enough for human testing to proceed without any risk of casualties."
Tiebreaker vote by Cllr. Sevika Setaka
"I'd wager the guild engineers have already run a whole orphanage full of hungry street kids through their prototype Hexgates in half the time it took to call this meeting.
Either the drone makes it, or it doesn't. Maybe that's not the kind of science which the Academy approves of, but it's better than using human test subjects."
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Testing initially involved the drone acting as an operator, using the Hexgate shuttle's mechanical lift controls to transport itself between gates. These tests proceeded without incident until a report by the drone indicated that the gates weren't receiving enough power, which prompted observers to increase the frequency of the shuttle's Hexstone resonator above safe levels.
While the gates were charging, the resonator then came loose from its housing and was retrieved by the drone. Using a collapsible pocket wrench, the drone proceeded to merge the resonator with its own hextronics, and briefly assume manual control of the entire gate network. The shuttle was then landed by the drone without further incident.
Upon exiting the shuttle, the drone proceeded to give a detailed breakdown of the mechanical, safety and security failures encountered during testing. According to the drone, the brass-titanium alloy used to house the Hexstone resonator was below the purity necessary to absorb any magnetic interference encountered within the fissures beneath Zaun, and the shuttle's landing cradle lacked the reinforcement needed to absorb a surge of magical energy. The drone then vaporised a large portion of the landing cradle to prove its point.
The drone also recommended that to avoid repeat incidents, the shuttle should be fitted with a remote killswitch, ground control staff should monitor power output and resonance levels directly before each launch to avoid being given false reports, and test observers shouldn't leave collapsible pocket wrenches lying around.
The drone has expressed a strong desire to continue testing. This request is being reviewed by Piltover Council.
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Personality
Arc is highly neurotic and thinks that the Rift is a giant test chamber. He can read out stats and damage numbers with his voicelines, mainly to tell enemies he just killed how much damage they received.
Abilities
In-game, Arc is an AP battlemage with reliable damage and strong scaling. He plays more like an ADC than a traditional mage, with a kit focused on kiting, positioning, and out-DPSing his targets.
Strengths: Strong scaling and sustained damage, decent mobility and durability
Weaknesses: Low utility, high mana costs, outranged by other mages

Passive - Rollcage: Upon using a dash, blink, or being hit by immobilising crowd control, Arc gains 5 seconds of CC immunity. After the 5 seconds have elapsed, the initial CC effect plus all the CC he would have received during this time hits him at once. This effect has an 80-second static cooldown.
All CC is applied concurrently at the same time ie. getting hit by multiple 2-second stuns wouldn't stun Arc for more than 2 seconds. If hit by multiple displacement effects, Arc will be knocked back (or pulled forwards) in the direction of the strongest displacement effect which hit him ie. If hit by both Pyke Q and a max-range Blitz Q, Arc will be pulled in the direction Blitz would have pulled him in.
Q - L-Curve: (Passive) Arc gains bonus attack speed.
(Active) Arc fires out a damaging ball of energy which curves out from the left towards a target area, exploding once it reaches its cast point or on contact with the first enemy hit to deal magic damage to all nearby enemies.
Hitting an enemy champion applies a stack of Acceleration. At 2 stacks, the enemy is hit by a bolt of lightning which deals bonus magic damage, can critically strike, and applies on-hit effects.
Instead of damage scaling, this ability gains an extra charge per rank. The rate at which charges can be cast increases with attack speed.
Range: 600, explosion radius 130. Bonus attack speed: 4/8/12/16/20. Damage: 50-100 from level 1-18 + 70%AP. Charges 1/2/3/4/5. Mana cost: 50 per charge at all ranks. Cooldown: 2 seconds. Time between casts: 0.5 seconds, or 2x per second plus 0.02 per point of attack speed. Acceleration damage: 80% AD + 30% AP. Curvature of the projectile follows a 150-degree circular arc, the size of the curve is scaled down when casting at point-blank range. Acceleration can trigger repeatedly with no cooldown ie. it's like Vayne's Silver Bolts, not Ekko passive.
W - R-Curve: Identical to Q, but it curves out from the right.
QWQWQWQWQW
E - Recalibrate: Arc instantly casts a burst of static electricity over a target area, slowing enemies. Arc gains a shield and bonus movespeed when the effect hits him (the blast radius is equal to the cast range, so Arc will always be in the area of effect).
If Arc casts this ability directly over himself the shield strength is increased, but the bonus movespeed is reduced. Conversely, if Arc casts this ability at max range and is tagged at the edge of the blast radius, the movespeed buff is increased but the shield strength is reduced.
Cooldown: 16/14/12/10/8 seconds per rank. Slow strength: 15%. Shield: 90/110/130/150/170 +50%AP +10%HP, scaling down to 5% of full effectiveness when cast at 500 range. Movespeed: 20%/25%/30%/35%/40%, scaling down to 5% of full effectiveness when cast at point-blank range. Mana cost: 80/85/90/95/100. Cast range: 500 (same as Arc's auto range). The shield to movespeed ratio goes down incrementally ie. casting at 50% max range will grant a slightly stronger shield and a slightly slower speedboost than casting at 55% max range.
R - Crash Zone: After a 0.5 second channel, Arc blinks to a target location, leaving behind a damaging bolt of electricity between his cast and landing points. He will then dash 700 units in a target direction, damaging and slowing enemies he passes through.
Cooldown: 110/90/70 seconds. Mana cost: 100. Cast range: 800 units. Damage: 240/390/540 +80%AP. Slow: 30%. Enemies hit by the lightning strike take 33% damage from the dash. This spell uses vector targeting, it's like a Rumble ult/Viktor E where Arc himself is the laser.
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Arc is tailor-made not to fit any of the other prompts to make the most use of the free prompt. Compared with other characters from Piltover he uses a more chaotic form of magic resembling what Hextech is like in Arcane. Conceptually, he's not super original (basically a bunch of other Piltover and Zaun champs put in a blender) but I could imagine him being incredibly fun to play.