Prioritize efficient full clears to hit level 6 quickly and leverage Diana's high clear speed and objective control.
Avoid early river fights unless you have lane priority or numbers advantage, as Nocturne's level 6 gank threat with (R) is strong.
This matchup revolves around snowballing through mid-game skirmishes and objective control using Diana's burst and teamfight engage.
Jungle Plan
Use fast clears to reach level 6 and then force objective fights where (R) can hit multiple targets.
Invade or counter-jungle only when you have lane priority and vision control to avoid Nocturne's (R) ganks.
Track Nocturne's pathing to predict his first ultimate target and be ready to counter-gank or collapse with your team.
Danger windows
Respect Nocturne's level 6 (R) global darkness for gank setups, especially when your lanes lack vision or priority.
Avoid isolated river fights early where Nocturne can use (E) fear and spell shield to win duels.
Be cautious when your (E) is on cooldown, as you lose much of your burst and escape potential, making you vulnerable to counter-attacks.
Early game
Start with a full clear toward the safest reset to maintain tempo and avoid early invades before level 6.
Contest first Scuttle only if nearby lanes have priority to support and prevent Nocturne's counter-invade.
Avoid extended fights pre-6 since Diana's dueling is medium and Nocturne can punish missed (Q) or forced (E) cooldowns.
Power spikes
Level 3 unlocks your (Q)+(W)+(E) burst combo with dash reset and shield; use it to punish Nocturne when he overextends or misses cooldowns.
Level 6 (R) is your main teamfight and pick tool; use it to initiate or disengage fights around objectives.
First completed AP skirmish item significantly increases your burst and objective pressure; play more aggressively post-item while respecting Nocturne's spell shield.
Win conditions
Convert fast clears and level 6 power spike into objective control by forcing fights where your (R) hits multiple enemies.
Use vision and lane priority to safely invade or counter-jungle Nocturne, denying his scaling and map pressure.
Coordinate with lanes to punish Nocturne's post-6 gank attempts and leverage your burst to secure kills and snowball leads.
Tip: For Diana vs Nocturne, read overview, trading pattern, and danger windows first for a fast Jungle lane check.
