Use Rengar's early dueling and brush control to invade Master Yi's jungle when lanes hold priority and secure river vision before Scuttle fights.
Deny Master Yi free farm by contesting camps early and forcing him into risky cross-map pathing to delay his scaling.
Jungle Plan
Path through enemy jungle entrances with brush control to catch Master Yi farming and deny his tempo before he hits key item spikes.
Contest dragon and Rift Herald setups aggressively after securing picks with (R) stealth, leveraging your high gank threat to create numbers advantages.
Track Master Yi's camp timers and counter-jungle when lanes show pressure, forcing him into inefficient farming routes and delaying his scaling.
Danger windows
Beware early river fights where Master Yi can use (Q) untargetability and (W) damage reduction to stall and turn fights.
Avoid low-health clears or forced smite fights near objectives where Master Yi's reset potential with (R) can overwhelm you.
Respect moments when lanes lack priority, as Master Yi can safely farm and scale uncontested, increasing his threat mid to late game.
Early game
Start with a brush-heavy path to maximize level 3 dueling strength and look for level 3 invades when nearby lanes can assist or cover your exit.
Fight for first Scuttle only if your lanes have priority and you control river brush to limit Master Yi's safe approach.
Avoid extended early fights in open river areas where (Q) untargetability and (W) damage reduction can turn skirmishes against you.
Power spikes
At level 6, use (R) to create picks and force Master Yi into unfavorable fights before he can activate his own (R) reset threat.
Exploit Master Yi's weaker early dueling before his first item by invading and forcing fights around brush where your empowered (E) root can lock him down.
Respect Master Yi's power spike after his first item and (R) activation by avoiding isolated fights and forcing engagements only with lane priority and committed CC.
Win conditions
Convert early brush control and successful invades into objective control by forcing Master Yi off camps and securing dragon or Rift Herald.
Use (R) stealth picks to create numbers advantages before major objectives, denying Master Yi safe access and delaying his scaling.
Maintain high jungle tempo and track Master Yi's pathing to counter-gank effectively and prevent him from reaching his carry power spikes.
Tip: For Rengar vs Master Yi, read overview, trading pattern, and danger windows first for a fast Jungle lane check.
