Hi, my name is Megz and this is my very first guide on Mobafire.
Since there isn't a lot of Kayn top guides, Here is my own Kayn top guide, I hope you enjoy.
Note: It is a fun enjoyable build if you know how to play Kayn, not mainly for trying hard in ranked but it also works.

If you have any questions, please write them in the discussion and I will be checking them every now and then

The Darkin Scythe(Passive): Kayn wields an ancient, sentient weapon that battles with him for control. Dealing damage against champions causes them to drops orbs that are automatically collected upon leaving combat, filling a bar above Kayn's portrait.

Once the bar is full, he can choose to either be overwhelmed by Rhaast or expel him to become the Shadow Assassin, based on whether he has damaged more melee or ranged champions, respectively. Once primed, the other option becomes available after 4 minutes. Kayn can continue collecting orbs for his other form to reduce the wait time.

The transformation can only be performed by interacting with Kayn's portrait while on the summoning platform, permanently changing his abilities


Reaping Slash (Q): Kayn dashes forward, dealing 75 / 95 / 115 / 135 / 155 (+0.65 per bonus attack damage) physical damage to all enemies he passes through before flourishing his scythe, dealing the same damage again to surrounding enemies.

Both instances of Reaping Slash deal 40 bonus damage against minions and monsters.


Blade's Reach (W): After a short delay in which he can't perform any other actions, Kayn performs an upwards sweep with his scythe, dealing 90 / 135 / 180 / 225 / 270 (+ 1.3 per bonus attack damage) physical damage to all enemies in a line and slowing them by 90%, decaying over 1.5 seconds.


Shadow Step (E): Kayn gains 40% bonus movement speed, is ghosted and can ignore terrain collision for 1.5 seconds. Immobilizing effects will interrupt Shadow Step.

Kayn heals himself by 100 / 115 / 130 / 145 / 160 (+ 0.4 per bonus attack damage) upon moving through terrain for the first time and, if he's not in combat with enemy champions, Shadow Step's duration is increased to 7 / 7.5 / 8 / 8.5 / 9 seconds.

Entering combat with a champion after the effect is enhanced reduces the remaining duration to 1.5 seconds.


Umbral Trespass (R): Passive: Kayn's basic attacks and abilities mark enemy champions for a few seconds.

Active: Kayn can activate Umbral Trespass to infest a marked enemy champion for up to 2.5 seconds, revealing them and becoming untargetable for the duration. Reactivating Umbral Trespass ends the effect early.

Upon reactivation or at the end of the duration, Kayn wrenches free from their body in the cursor's direction, dealing 150 / 250 / 350 (+ 1.75 per bonus attack damage) physical damage to the target.

The Darkin Scythe: Rhaast(Passive): Rhaast heals for 34% - 43% (based on level) of the post-mitigation damage that he deals with spells against enemy champions.


Reaping Slash: Rhaast (Q): Kayn dashes forward, dealing 55% of his total attack damage (+5% (+4% per 100 bonus attack damage) of target's maximum health) physical damage to all enemies he passes through before flourishing his scythe, dealing the same damage again to surrounding enemies. The damage against monsters is capped at 200 / 250 / 300 / 350 / 400.

Both instances of Reaping Slash deal 40 bonus damage against monsters.


Blade's Reach: Rhaast (W): After a short delay in which he can't perform any other actions, Kayn performs an upwards sweep with his scythe, dealing 90 / 135 / 180 / 225 / 270 (+ 1.3 per bonus attack damage) physical damage to all enemies in a line, knocking them up for 1 second, then slowing them by 60%, decaying over 1.5 seconds.


Shadow Step: Rhaast (E): Kayn gains 40% bonus movement speed, is ghosted and can ignore terrain collision for 1.5 seconds. Immobilizing effects will interrupt Shadow Step.

Kayn heals himself by 100 / 115 / 130 / 145 / 160 (+ 0.4 per bonus attack damage) upon moving through terrain for the first time and, if he's not in combat with enemy champions, Shadow Step's duration is increased to 7 / 7.5 / 8 / 8.5 / 9 seconds.

Entering combat with a champion after the effect is enhanced reduces the remaining duration to 1.5 seconds.


Umbral Trespass: Rhaast (R): Passive: Kayn's basic attacks and abilities mark enemy champions for a few seconds.

Active: Kayn can activate Umbral Trespass to infest a marked enemy champion for up to 2.5 seconds, revealing them and becoming untargetable for the duration. Reactivating Umbral Trespass ends the effect early.

Upon reactivation or at the end of the duration, Kayn wrenches free from their body in the cursor's direction, dealing 10% (+ 13% per 100 bonus attack damage) of target's maximum health as physical damage to the target, and healing him for 70% of that amount.

Pros → Fast wave clearing with Q → Very high damage specially against tanks → Tons of healing → Very high ability to escape → Huge items pool → Ability to 2v1 in lane after transforming

Cons → Needs to get in melee range → Can easily get peeled → After picking a side you cant change back → Can suffer in lane before level 6