Cassiopeia Champion Guide: Master the Serpent's Deadly Arsenal in Season 15

Cassiopeia Champion Guide: Master the Serpent's Deadly Arsenal in Season 15

By Marcus Chen

February 24, 2025 at 10:08 PM

Cassiopeia is a powerful control mage who excels at dealing consistent damage through poison and petrification abilities. Her unique passive prevents her from buying boots but grants increased movement speed, allowing for an extra legendary item slot.

Core Strengths:

  • High sustained damage output that rivals ADCs
  • Strong self-peel abilities with W (Miasma) and R (Petrifying Gaze)
  • Excellent late-game scaling due to extra item slot
  • Effective kiting and chase potential

Key Weaknesses:

  • Mana-intensive early game
  • Shorter range compared to other mages
  • Requires precise positioning
  • High skill ceiling

Ability Priority:

  1. E (Twin Fang) - Main damage source, heals on hit, bonus damage to poisoned targets
  2. Q (Petrifying Blaze) - Apply poison, grants movement speed
  3. W (Miasma) - Zone control, prevents movement abilities
  4. R (Petrifying Gaze) - AoE stun/slow based on enemy facing direction

Standard Combo: Q -> AA -> E -> E -> AA -> E (repeat in extended fights)

Favorable Matchups:

  • Linear-engaging assassins (LeBlanc)
  • Short-range mages (Sylas, Ahri)

Difficult Matchups:

  • Mobile assassins (Zed)
  • Long-range mages (Viktor, Syndra)

Core Items:

  1. Tear of the Goddess (early purchase)
  2. Liandry's Anguish
  3. Seraph's Embrace
  4. Cosmic Drive

Early Game Tips:

  • Manage mana carefully
  • Use E for last-hitting
  • Focus on farming until key items
  • Save W for defensive purposes

Late Game Approach:

  • Position behind frontline
  • Control objectives with W
  • Save ultimate for key fights
  • Maximize DPS with proper poison management

Cassiopeia

Cassiopeia

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