Jayce is a very unique champion that has both a ranged and melee form. The ability to be ranged while also being a bruiser allows him to win many difficult match-ups at the top lane.

Strengths:
+Strong ranged harass
+AoE movement speed buff
+Strong burst
+Huge bonus stats in Hammer form
+Quick map movement
+Very versatile skills

Weaknesses:
-Squishy in range form
-No dash/flash escapes
-No real ultimate
-Difficult to play the first few times

Aggressive vs Bruisers:


Bit more passive vs Bruisers:


Against AP top:

Marks: Armor Penetration - More damage versus champions

Seals: Armor - Take less damage versus autoattacks and minions

Glyphs: Flat/Scaling Magic Resistance - Flat vs AP top, scaling for tankier late game teamfight

Quints: AD - Better last hitting

Ignite augments killing potential, while Flash makes up for the lack of quick escapes.

Jayce gains 40 movement speed for 1.25 seconds and ignores unit collision each time Transform is cast.



Excellent for engaging in lane or running back to lane.




- To the Skies!

Jayce leaps to an enemy, dealing physical damage to his target and to enemies in the area, slowing them for 2 seconds.

Cost: 40 / 45 / 50 / 55 / 60 mana

Cooldown: 16 / 14 / 12 / 10 / 8 seconds

Physical Damage: 20 / 65 / 110 / 155 / 200 (+1.0 per bonus attack damage)

Slow: 30 / 35 / 40 / 45 / 50 %

- Shock Blast

Fires an orb of electricity that detonates upon hitting an enemy or reaching the end of its path, dealing physical damage to all enemies in the area of the explosion.

If Shock Blast is fired through an Acceleration Gate, the area of effect, missile speed and range will be increased, and its damage will increase by 40%.

Cost: 55 / 60 / 65 / 70 / 75 mana

Cooldown: 8 seconds

Physical Damage: 60 / 115 / 170 / 225 / 280 (+1.2 per bonus attack damage)

Accelerated Physical Damage: 84 / 161 / 238 / 315 / 392 (+1.68 per bonus attack damage)



Hammer form: AoE damage/slow + gapcloser. Very useful skill, I max this second as the base damage isn't that amazing.

Cannon form: More AoE damage, bit unreliable due to the nature of skillshots, when combined with , it does a ton of damage.




- Lightning Field

(Passive): Jayce regenerates mana each time he strikes an enemy while in Hammer Stance.
(Active): Creates an electric aura, dealing magic damage over 4 seconds to nearby enemies.

Cost: 40 mana

Cooldown: 10 seconds

Mana per hit: 6 / 8 / 10 / 12 / 14

Magic Damage Per Second: 25 / 42.5 / 60 / 77.5 / 95 (+0.25 per ability power)

Total Magic Damage: 100 / 170 / 240 / 310 / 380 (+1.0 per ability power)

- Hyper Charge

(Active): Jayce gains a burst of energy, increasing his attack speed to maximum for 3 attacks. These attacks deal varied damage depending on rank.
Cost: 40 mana

Cooldown: 14 / 12 / 10 / 8 / 6 seconds

Damage: 70 / 85 / 100 / 115 / 130 %




Hammer form: Some passive on-hit mana regen, the AoE damage is not very high. Does do decent damage to creeps, yay!

Cannon form: Bonus persists even after transforming. The skill is very useful to get rid of the slow attack animation after changing forms. I always try to have this skill up when I switch to hammer form for maximum damage.





- Thundering Blow

Deals magic damage equal to a base amount plus a percentage of the target's maximum health, knocking the target back a short distance. This damage is capped against monsters.

Cost: 40 mana

Cooldown: 14 / 13 / 12 / 11 / 10 seconds

Magic Damage: 40 / 70 / 100 / 130 / 160 (+1.0 per bonus attack damage)

Max Health to Damage Ratio: 8 / 11 / 14 / 17 / 20 %

Max Damage to Monsters: 200 / 300 / 400 / 500 / 600

- Acceleration Gate

Deploys an Acceleration Gate for 4 seconds, increasing the movement speed of all allies who pass through it for 3 seconds. This bonus fades over the duration.

Cost: 30 mana

Cooldown: 14 / 13 / 12 / 11 / 10 seconds

Movement Speed: 30 / 35 / 40 / 45 / 50 %



Hammer form: Thundering Blow does incredible damage. 160 base damage + 20% of max HP is an insane amount of damage.

Cannon form: AoE speed up makes ganking a lane for Jayce incredibly easy. Combining acceleration gate with Shock Burst will greatly increase its damage.





- Transform: Mercury Cannon

Transforms the Mercury Hammer into the Mercury Cannon, gaining new abilities and ranged attacks.
The next attack in Cannon Stance reduces the enemy's armor and magic resist for 5 seconds.

Cost: 0 mana

Cooldown: 6 seconds

Armor and Magic Resist Reduction: 10 / 15 / 20 / 25 %


- Transform: Mercury Hammer

Transforms the Mercury Cannon into the Mercury Hammer, gaining new abilities and bonus armor and magic resist.
The next attack in Hammer Stance deals additional magic damage.

Cost: 0 mana

Cooldown: 6 seconds

Bonus Armor and Magic Resist: 5 / 15 / 25 / 35

Bonus Magic Damage: 20 / 60 / 100 / 140



After transforming the first hit with the passive has a longer wind-up animation, it's quite annoying without having the attack speed boost from .

> > >

Maxing over :

Thundering Blow is reliable burst damage while Shock Burst isn't and To the Skies simply does not do as much damage. After trying both ways, I've found that burst damage from Thundering Blow allows you to win much more trades, making it the skill to max.

However, > as the AoE damage of Lightning Field is very low even when maxed and Hyper Charge serves its purpose with just a single point as you simply don't use Cannon form as much.

Start: /

Very standard start that is great especially because movement speed on an ranged champion makes it very easy to harass.

Early: + /

Extra Doran's Blades allow you to survive and trade more effectively in lane. Hexdrinker is an excellent item against a top lane AP.

Core: ->

Trinity Force provides much needed burst damage and combined with an extra slow makes it a very desired item.



Guardian Angel is an excellent item for Jayce as he functions very similar to Irelia. Both of these champions have decent burst damage, but with a bit more survivability, are difficult to kill and end up dealing a ton of damage.

Situational:



Cheap item that provides a massive amount of damage, especially when combined with the earlier Trinity Force.

->

If their AD carry is dealing too much damage to you, a Randuin's can help, although the earlier Guardian Angel should be enough.



If nobody on your team wants to get an Aegis, definitely pick one up.



Finish your into Maw of Malmortius if AP damage is giving you troubles.

/

Need more damage? Yay Bloodthirster! (and Infinity Edge! '-')

Definitely check out the commentary as it is the easiest way to learn how I play Jayce

Level 1: Take advantage of your ranged attacks at level 1. Do not go into Hammer form, unless you know you can win a trade and with creeps around, it is very difficult to.

Level 2-5: Continue to use your ranged harass to deal damage and do go into Hammer form to trade, but watch out for minion damage.

Level 6+: Your ultimate isn't too great, but continue to harass and be wary that your burst damage is not comparable to most bruisers with real ultimates at this point.

Jayce plays out like many bruisers - wait until the engage, then go in immediately after and try to take down the squishies. One strong advantage though is that you can poke in ranged form until the major damage spells have been used.

I apologize if I missed out on anything in this guide. The guide system trolled me really hard by wiping my whole guide when I completed it the first time (this is the second time writing this).

Anyways, Jayce is a very fun and unique champion with a great skillset. I enjoy playing Jayce and definitely would suggest trying him if you like bruisers!