Who Wins
- Pre-6: You win through sustain and Vayne's short trade superiority over Kai'Sa's longer trade patterns.
- Post-6: Matchup becomes more even as their burst potential increases, but your R can deny their all-in combos.
Synergy & Trading
- Use W to sustain through their poke, then E-Q when they step forward for trades.
- Always position to use R reactively when they commit to all-ins, as it can completely negate their burst damage.
Wave Control/Roaming
- Don't roam early as Vayne needs protection during her weak laning phase against their poke.
- Consider roaming after level 6 when Vayne has R for self-sufficiency, timing it with enemy recalls or when waves are pushed.
Mistakes to Avoid
- Don't waste W on minor poke damage early game as the mana costs are prohibitive.
- Never use R proactively for engages as it's much more valuable as a counter-engage tool against their burst potential.
Created on 01/23/2026
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