Dragon Strike: Jarvan IV charges through his opponent, dealing physical damage and lowering their armor by a percentage. This will pull Jarvan IV to a Standard if it encounters one, knocking up all enemies in his path.
Golden Aegis: Jarvan IV calls upon the ancient kings of Demacia to shield him from harm and slow surrounding enemies.
Demacian Standard: Passively grants Jarvan bonus attack speed and armor. Active: Throws a Demacian flag, dealing physical damage and granting passive benefits to nearby allies.
Cataclysm (Ultimate): Jarvan IV heroically leaps at his target, dealing physical damage and creating a circle of terrain around them for a few seconds.
Martial Cadence (Innate): Jarvan IV exploits his target's opening, dealing 10% of the target's current HP as magic damage. This effect cannot occur on the same target for 6 seconds.
Trueshot Barrage can now scale with 100% of Ezreal's bonus attack damage or with the 0.9 ability power ratio that already exists, depending on which is higher.
Death Timers have been reduced on Summoner's Rift to 12-50 seconds from 28-50 seconds.
Minions:
They now deal 60% more damage to turrets (up from 40%).
Melee minion magic resist now increases 1.25 per 3 minutes (up from 0.5).
Ranged minion armor now increases 1.25 per 3 minutes (up from 0.5).
Cannon minion armor and magic resist now increase 3 per 3 minutes (up from 2).
After 20 minutes, cannon minions now spawn every 2 waves (up from every 3 waves).
Cannon minions and super minions now reduce turret damage by 65% (up from 50%).
Fixed a tooltip bug "This unit receive..." with cannon minions and super minions.
Turrets:
Turrets deal about 10% less base damage to champions.
Turrets now have 20% armor penetration.
Fixed several typos in the Options Menu.
Hotfix
A hotfix for this patch went live on the 9th of March, with the aim of reducing the current minions pushing power[1]. The hotfix contains the following changes:
Minions:
Cannon minions now spawn every 2 waves after 35 minutes instead of 20.
Cannon minions and super minions now reduce turret damage by 50% (down from 65%).
Minions now deal 50% more damage to turrets, down from 60%.
After the hotfix, the minions changes introduced in this patch are the following:
Minions:
Minions now deal 50% more damage to turrets (up from 40%).
Melee minion magic resist now increases 1.25 per 3 minutes (up from 0.5).
Ranged minion armor now increases 1.25 per 3 minutes (up from 0.5).
Cannon minion armor and magic resist now increase 3 per 3 minutes (up from 2).
After 35 minutes, cannon minions now spawn every 2 waves (up from every 3 waves).
Fixed a tooltip bug "This unit receive..." with cannon minions and super minions.
Undocumented Changes
General
Change to slow stacking.
The most potent slow you put on a target always slows for the amount stated (full effect). Slows beyond the highest % slow still stack multiplicatively but are cut in half. Previously, diminishing returns for slows kicked in at a certain number, which meant that the first slow applied may have been hitting diminishing returns and slowing for less than intended. In general single slows will be as strong or stronger than before and multiple slows should be weaker than before.[2][3][4]