How to win lane as Cassiopeia against LeBlanc · 47.35% win rate over 642 Emerald+ games · Updated 2026-07-27
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Cassiopeia | Level 1 favors Cassiopeia slightly since her poison poke starts free damage while LeBlanc still needs to land E to do anything meaningful. |
| Level 2 | Cassiopeia | Level 2 continues to favor Cassiopeia as her sustained poke out-trades LeBlanc's short burst window when both are missing key combo pieces. |
| Level 3 | Cassiopeia | Level 3 stays in Cassiopeia's favor because her poison DoT racks up over the whole trade while LeBlanc's damage is front-loaded and easily disengaged from. |
| Levels 4-5 | Cassiopeia | Levels 4-5 remain favorable for Cassiopeia as her range and sustained pressure outpace LeBlanc's cooldown-gated burst. |
| Level 6 | LeBlanc | Level 6 flips to LeBlanc because her full ultimate-empowered combo can burst Cassiopeia down before Cassiopeia's own ultimate is available to punish back. |
| First item | Cassiopeia | Cassiopeia's first item swings the fight back her way since sustained poison damage outpaces LeBlanc's burst-only itemization. |
| Two+ items | Cassiopeia | Two items in, Cassiopeia's scaled poke and execute threat outrange and outlast anything LeBlanc's short-cooldown combo can force. |
LeBlanc's early trades come from her Sigil of Malice proc plus E root, so respect that combo but don't be afraid to poke back with Q since she has no sustain to out-heal your poison. Levels 1-3 are close, but you generally win extended trades since your poison ticks continue after she disengages. Watch her mana bar — she's not infinite on resources and has to commit E to land real damage. Miasma denies her repositioning if she tries to weave in and out for pokes.
The full Cassiopeia vs LeBlanc report continues with the mid-game plan, the late-game and teamfight plan, every power spike to play around, and the win conditions for both sides — plus cooldown tracking and the live enemy-jungle tracker inside the app.
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Playing the other side? LeBlanc vs Cassiopeia guide →
All Cassiopeia mid lane matchups →