Kai'sa is a marksman who can play in the Duo Lane. Kai'sa is a very skilful, expressive champion that can evolve her abilities, unlocking new bonuses and effects. She can deal mixed damage and provide heavy burst for her team, which makes her feel impactful at all stages of the game. She has great carry potential and self-peel, making her a great team fight asset to have in any team.
Every time you buy an Upgraded (Complete) item, you can evolve one of your abilities. The best evolve order currently is:
Living Weapon: Kai'sa's abilities evolve upon fully upgrading an item. The most important evolve to go for early on is Icathian Rain, which gives Kai'sa double the amount of missiles, increasing her overall burst damage.
Caustic Wounds: Kai'Sa's attacks, Void Seeker and her allies' immobilizing effects stack Plasma on the enemy. Plasma detonates at 5 stacks, dealing bonus magic damage. The number of stacks on the target can be seen just below the champion/minion. Caustic Wounds means support's with stuns or roots synergize well with Kai'Sa, as the support can help you stack Plasma to help with your damage.
Kai'sa launches six missiles that split evenly among nearby enemies, each dealing physical damage. When Kai'Sa finds an isolated enemy, all the missiles go onto that enemy and do a lot of burst damage. Icathian Rain is an excellent tool during the laning phase. This ability can poke enemy champions and hit minions simultaneously.
Living Weapon: Kai'sa instead launches 12 missiles, that's double the number of missiles, and you guessed it, double the amount of damage! When completing your first item, you can get this upgrade at around 4 minutes, which will be a huge power spike of damage before going into teamfights.
Kai'sa fires a blast that reveals the first enemy hit, adds two Plasma stacks, and deals magic damage. There are two ways to utilize this ability to its full potential. The first is hitting enemies with Void Seeker between your attacks to get 5 stacks as quickly as possible to deal more burst damage. The second is to use Void Seeker from afar to mark enemies so you can use your Killer Instinct on the target to dash to them. This is especially useful when you can find an isolated target and try to burst them before a teamfight starts.
Living Weapon: Void Seeker will add 3 stacks of your passive instead of 2 and lower the cooldown when it hits an enemy champion. When playing AD Kai'sa, you don't want to focus too much on this upgrade; however, if you're playing AP Kai'sa, you want to get this evolved 2nd.
Supercharge charges up for a second, gaining movement speed. After the charge is finished, Kai'sa gains attack speed. When you are charging, you cannot attack; you can only use other abilities. Supercharge enhances Kai'sa's mobility and serves as an excellent engage/disengage tool, allowing you to make a quick getaway or close the gap to the enemy.
Living Weapon: When you activate Supercharge, you will become invisible during the charge-up. This helps break the enemy's vision and stop them from attacking you, allowing you to reposition during a team fight.
Kai'Sa dashes to a location near an enemy champion marked by Plasma, gaining a shield that absorbs damage for a few seconds. When you are in a duel at close range, you can use Killer Instinct to avoid enemy damage, skill shots or crowd control, allowing you to reposition and get a shield to help you survive.
Another way you can use Killer Instinct is to jump onto the enemy backline carries to assassinate them, but be careful when doing this; if you get caught, you will die very quickly.
Bloodthirster helps increase Kai'sa's chance of survival in combat and can heal after teamfights, allowing you to maintain pressure on the map and pose a threat to your enemies.
Magnetic Blaster offers Kai'sa a longer attack range every few seconds, helping with kiting during team fights, and increased attack speed to help you stack Plasma much quicker.
Soul Transfer gives Kai'sa increased burst damage when auto-attacking in teamfights. Even though the clones do not stack your passive, the extra free damage they offer can help a lot.
Onto the runes, we have:
Lethal Tempo is one of Kai'sa's best keystones to increase her damage output. It's incredibly powerful when taking extended fights, and it helps to increase the amount of Plasma you can stack.
Brutal increases Kai'sa's auto attack damage, and with so much attack speed in her kit and build, it's going to help her overall damage output in fights.
Coup de Grace provides additional damage that helps burst enemies when they are low on health.
Giant Slayer is another good option when playing against bruisers and Tanks that build a lot of health.
Alacrity increases Kai'sa's attack speed, which synergizes well with her kit, allowing her to stack more Plasma throughout the game to deal more damage.
Bone Plating is a great choice for surviving all-ins from enemy champions. As the carry for your team, you'll get a lot of focus from the enemies.
In the Early Game, your primary focus should be to farm minions, earning as much gold and experience as possible. Kai'sa doesn't have the attack range to walk up and take early trades. Wait until you complete your first upgraded item, which should take around 4 minutes, so that you can upgrade Icathian Rain. This will help you clear minion waves more quickly and trade with enemies early on. When playing with supports that have crowd control, be sure to keep an eye on enemies so you can follow up and try to stack your Plasma to deal more damage.
Kai'sa is one of the best Late Game scaling marksman in the game. Once she has 3 items, all her basic abilities will be evolved and make a huge impact during teamfights. You have so much mobility with her Killer Instinct and the ability to turn invisible with Supercharge. If you can use your ultimate and jump into the enemy backline, do it! Kai'Sa has a lot of damage and survivability.
It's always best as a marksman to stay grouped with your team. You want to stay as far back from the enemies as possible and allow your front line to go in front of you to tank all the damage. Most of the time, you are the main damage output, so if you are caught by yourself and die, your team is in massive trouble, so make sure you stay safe at all times.
Kai'Sa is a very unique and fun champion to play. Being able to evolve her abilities really brings something new to the Rift. She is a super mobile champion and has the opportunity to carry a team fight by jumping in onto the backline.
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Good luck on the rift summoners!
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