Abilities:

Double Strike (Passive): Every fourth consecutive basic attack, Master Yi strikes twice.
Alpha Strike (Q): Master Yi blinks to a target enemy, dealing damage to them and multiple nearby enemies. This ability can be used to dodge certain skills and provides brief invulnerability during the animation.
Meditate (W): Master Yi enters a meditative state, restoring health and reducing incoming damage. It's a powerful tool for sustain and damage reduction.
Wuju Style (E): Activating this ability grants bonus true damage to Master Yi's basic attacks for a duration.
Highlander (R): Master Yi gains bonus attack speed and movement speed. Kills and assists extend the duration of Highlander and reduce the cooldown of his other abilities.
Early Game:

Farm Efficiently: Master Yi benefits greatly from gold and experience, so focus on efficient farming to scale into the late game.
Gank Opportunities: Use Alpha Strike to gap close during ganks. Communicate with your team and coordinate ganks to secure kills and objectives.
Itemization:

Essential Items: Core items for Master Yi include Kraken Slayer, Blade of the Ruined King, and Guinsoo's Rageblade. These items enhance his damage output and provide synergy with his kit.
Situational Items: Adjust your build based on the enemy team composition. Consider items like Guardian Angel, Sterak's Gage, or Mercurial Scimitar for survivability.
Jungle Clear:

Optimize Alpha Strike Usage: Use Alpha Strike to reset your basic attack timer and optimize your jungle clear speed. This helps you sustain and clear camps efficiently.
Wuju Style Activation: Activate Wuju Style just before Alpha Strike for increased damage on your empowered basic attacks.
Teamfight Tactics:

Assassin Playstyle: Master Yi excels at cleaning up fights. Wait for major crowd control abilities to be used before engaging, and then use Highlander to reset Alpha Strike and take down enemies.
Target Selection: Identify key targets, such as enemy carries, and use Alpha Strike to quickly eliminate them. Properly timing Meditate can also help you survive focused damage.
Split Pushing:

High Dueling Potential: Master Yi is a strong duelist, making him effective in split pushing. Use Alpha Strike and Wuju Style to quickly clear waves and apply pressure.
Map Awareness: Keep an eye on the minimap while split pushing. If multiple enemies are missing, be cautious and consider retreating.
Objective Control:

Soloing Dragon and Rift Herald: With sufficient items and health, Master Yi can solo Dragon and Rift Herald. Coordinate with your team to secure these objectives efficiently.
Late Game:

Teamfight Cleanup: In team fights, wait for the initial engagement to unfold, and then use Highlander to clean up the fight. Your resets with Alpha Strike can be devastating.
Backdoor Potential: Master Yi's high attack speed allows for effective backdooring. If the enemy team is distracted, consider sneaking into their base and taking down inhibitors or turrets.
Mastering Alpha Strike Resets:

Practice Timing: Mastering the timing of Alpha Strike resets is crucial. Learn to use it effectively to dodge enemy abilities and optimize your damage output.
Highlander Activation:

Strategic Use: Highlander not only enhances your damage output but also provides crowd control immunity and reduces the cooldown of your other abilities. Use it strategically to engage, disengage, or secure objectives.
Counter Jungling:

Counter Jungling and Invades: Master Yi's dueling potential makes him strong in counter-jungling. If you have vision and knowledge of the enemy jungler's location, consider invading their jungle.
Remember that Master Yi is highly dependent on good positioning and timing. Patience is key, especially in team fights. Wait for the opportune moment to engage, and use Alpha Strike resets to your advantage. Effective decision-making and proper itemization are essential for success with Master Yi.

Double Strike (Passive):

Every fourth consecutive basic attack, Master Yi strikes twice. This passive ability enhances his overall damage output, especially when combined with items and abilities that grant attack speed.
Alpha Strike (Q):

Master Yi blinks to a target enemy, dealing physical damage to them and to up to 4 additional enemies in the area around the target. Alpha Strike can critically strike and applies on-hit effects. Importantly, if the target dies during Alpha Strike, the cooldown and mana cost are partially refunded, allowing Master Yi to chain Alpha Strikes in the right circumstances.
Meditate (W):

Master Yi enters a meditative state, restoring health over a few seconds. Additionally, Meditate reduces incoming damage. The ability can be channeled for a brief period, during which Master Yi becomes untargetable, making it a powerful tool for mitigating damage and sustaining in fights.
Wuju Style (E):

Activating Wuju Style grants Master Yi bonus true damage on his basic attacks for a few seconds. This ability significantly increases Master Yi's damage output, especially when combined with high attack speed. The bonus damage is applied to both champions and structures.
Highlander (R):

Upon activation, Master Yi gains bonus attack speed and movement speed for a duration. Additionally, Highlander provides immunity to slows and grants reduced cooldowns on his other abilities for each kill or assist during its duration. The resets and bonus attack speed from Highlander make Master Yi a formidable force in team fights and skirmishes.
Remember that Master Yi's kit revolves around his auto-attacks and resets. Properly timing Alpha Strike resets and maximizing the benefits from Wuju Style and Highlander are crucial for optimizing his damage output and survivability. Additionally, Meditate provides sustain and damage reduction, making it an important tool for surviving in fights.

When playing Master Yi, focus on building attack damage and attack speed to amplify his damage potential. Items like Kraken Slayer, Blade of the Ruined King, and Guinsoo's Rageblade are commonly core items for him. Understanding the synergy between his abilities, auto-attacks, and itemization will help you maximize your effectiveness on the Rift.