As the royal family of Demacia for centuries, members of the Lightshield line have spent their lives waging war against any who opposed Demacian ethics. It is said that every Lightshield is born with anti-Noxian sentiment in his blood. Jarvan IV is no exception, even though he is the first Lightshield born to the age of the League of Legends. As his forefathers had before him, he led Demacian troops into bloody engagements with Noxian forces, and on many occasions he has bled alongside wounded allies and fallen comrades. In his most crushing defeat, he was outmaneuvered and captured by a Noxian battalion under the command of Jericho Swain. This mistake nearly cost him his life at the hands of Urgot, but he was rescued by the Dauntless Vanguard, an elite Demacian strike force led by Jarvan's childhood companion, Garen.

Those close to him believed that his capture changed him. Xin Zhao was quoted as saying: ''His eyes never seemed to look at you, only through you to something he could not look away from.'' One day, without warning, Jarvan IV handpicked a squad of Demacian soldiers and left Demacia, vowing to find ''atonement''. He began by tracking and hunting the most dangerous beasts and bandits he could find in northern Valoran, but he soon tired of such prey. Seeking something that only he understood, he ventured south of the Great Barrier. He wasn't heard from again for nearly two years. After many had assumed the worst, he returned to glorious fanfare on the streets of Demacia. His Demacian plates were adorned with the bones and scales of creatures unknown. His eyes bore the wisdom of someone twice his age. Of the twelve soldiers who had departed with him, only two returned. In a tone as cold and steady as steel, he swore to bring the enemies of Demacia to their knees.

''There is only one truth, and you will find it at the point of my lance.''
- the ''last words'' of Jarvan IV at his failed execution

Damage 50(+3.4 / per level)
Health 420(+90 / per level)
Mana 235(+30 / per level)
Move Speed 315
Armor 14(+3 / per level)
Spell Block 30(+1.25 / per level)
Health Regen 1.4(+0.14 / per level)
Mana Regen 1.2(+0.09 / per level)

Activate skills
Dragon Strike - Jarvan IV extends his lance, dealing physical damage and lowering the Armor of all enemies in its path. Additionally, this will pull Jarvan to his Demacian Standard, knocking up enemies in his path.
Jarvan IV extends his lance, dealing 70/120/170/220/270 (+) physical damage and lowering the Armor of all enemies in its path by 10/14/18/22/26% for 3 seconds.

If it contacts his standard it will pull Jarvan IV to its location, knocking up enemies in his path.

Cost
45/50/55/60/65 Mana
Range
770

Golden Aegis - Jarvan IV calls upon the ancient kings of Demacia to shield him from harm and slow surrounding enemies.
Jarvan IV forges a 50/90/130/170/210 (+20/25/30/35/40 health for each nearby enemy champion) health shield for 5 seconds, which slows surrounding enemies by 15/20/25/30/35% for 2 seconds.

Cost
75/75/75/75/75 Mana
Range
600

Demacian Standard - Jarvan IV carries the pride of Demacia, passively granting him bonus attack speed and armor. Activating Demacian Standard allows Jarvan IV to place a Demacian flag, granting these benefits to nearby allies.
Passive: Jarvan IV has 10/14/18/22/26% bonus Attack Speed and 10/14/18/22/26 bonus Armor.

Active: Jarvan IV throws a Demacian flag to a nearby area, dealing 60/110/160/210/260 (+0.8) magic damage to enemies, and granting surrounding allied champions his passive bonus for 8 seconds.

Cost
60/60/60/60/60 Mana
Range
830

Cataclysm - Jarvan IV heroically leaps into battle at a target with such force that he terraforms the surrounding area to create an arena around them.
Jarvan IV heroically leaps at an enemy champion, dealing 200/325/450 (+) physical damage and creating an arena of impassable terrain around them for 3.5 seconds.

Activate again to collapse the wall.

Cost
100/125/150 Mana
Range
650


Passive skillMartial Cadence - Jarvan IV's first attack on a target deals 10% of their current Health as bonus magic damage (max: 400 damage). This effect cannot occur on the same target for 6 seconds.

Try to remember in which order you hit your enemies with Martial Cadence, so you can immediately use it on them again when 6 seconds are up.
Martial Cadence can only affect a unit once in 6 seconds, so it is a good idea to target another unit or champion to activate the passive during that time.
Using Dragon Strike to harass the enemy is useful. Keep Dragon Strike off cooldown for initiation, chasing or last-hits.
Golden Aegis can slow retreating enemies to finish them off. Combine Golden Aegis, Demacian Standard and Dragon Strike in this order to finish fleeing enemies if your ultimate is not usable.
Placing a Demacian Standard increases the stats of allies as well as one's own. Remember that Jarvan IV gains both his passive's and the standard's bonus stats.

It is unwise to place a Demacian Standard before a gank. Experienced players will notice the situation and act cautiously.

Using Cataclysm to cage multiple enemies is a great way of dealing damage to them without harming your own teammates. Be careful where and when you place it, as it may not turn out to be in your favor. Using Cataclysm at the wrong time/place can cause unnecessary death to you or your teammates, for example caging the wrong enemy out or caging low-health allies within.

Consider saving Dragon Strike and Demacian Standard, so Jarvan IV has an escape technique after trapping enemies with Cataclysm. Placing Demacian Standard over an impassible wall or terrain and using Dragon Strike gives you a great way to juke and escape this tactic can also be used to help enemies escape.
Enemy champions such as Shaco, Ezreal, Shen, or other champions with a similar short-ranged teleport/dash ability (including Flash) can easily escape Cataclysm. Be aware of this when using Cataclysm on these targets.

Combining well-placed Demacian Standard Demacian Standard with Dragon Strike Dragon Strike can disrupt the enemy enough to turn the tide in a battle. This can also be used to chase an enemy or cut them off by pulling yourself across terrain.
Jarvan IV can have a deceptively long nuke radius. Consider using your Demacian Standard Demacian Standard and Dragon Strike Dragon Strike combination to close distance on a target, and using Cataclysm Cataclysm immediately afterwards for the nuke