Renekton should leverage his early lane pressure and burst trades to deny Lux a calm scaling mid-lane.
Prioritize controlling the wave and using high fury short trades to prevent Lux from safely poking or setting up picks.
Trading pattern
Engage trades by stacking fury, then dash in with (E), use empowered (W) stun, hit (Q) for sustain, and exit with second (E).
Punish Lux whenever she misses (Q) root by committing to burst trades.
Avoid trading when low on fury or after using both (E) casts forward to maintain escape options and reduce punish risk.
Danger windows
Respect (Q) root and shield (W) combo, especially when her key abilities are up and (R) is available.
Avoid committing to trades when both your (E) dashes are used forward without a safe exit.
Be cautious of Lux's all-in potential after level 6 and after she completes her first mage item; hold key cooldowns and position to avoid burst.
Early game
Push early waves to force Lux under tower and limit her poke opportunities.
Use level 3 power spike to trade aggressively with full (Q), (W), and (E) combo when fury is high.
Avoid extended fights without fury or when both (E) dashes are spent to prevent Lux punishing you.
Power spikes
At level 3, use full combo with (Q), (W), and (E) to force short trades and build lane dominance.
At level 6, activate (R) to increase durability and convert poke advantage into all-in kills or tower dives.
Respect Lux's level 6 (R) and first completed mage item as her damage and pick threat increase significantly; avoid overextending during these windows.
Win conditions
Snowball early lane advantage by consistently winning high fury short trades and denying Lux scaling.
Use lane priority to crash waves and set up dives or roam opportunities with (R) empowered all-ins.
Maintain pressure to prevent Lux from safely farming and scaling, forcing her into mistakes you can punish with your burst and stun combo.
Tip: For Renekton vs Lux, read overview, trading pattern, and danger windows first for a fast Mid lane check.