Cassiopeia splash art
Patch 26.20Arena trios · updated Oct 7, 2026

Cassiopeia Arena Build

Cassiopeia, the Serpent's Embrace, is a ranged mage champion. In fights Cassiopeia is a fragile champion who deals magic damage through sustained attacks, with healing in the kit. Here are the augments Cassiopeia players take most, the Prismatic items worth grabbing and the core build on patch 26.20.

Arena tier
Excellent picks
Cassiopeia games this patch
12,933
Skill max
EQW

Quick Answer for Patch 26.20

  1. Magic Missile

    Gold

    Dealing damage with an Ability fires 3 magic missiles, each dealing percent max Health true damage.

  2. Spellwake

    Prismatic

    Hitting enemies with Abilities creates a blast that deals magic damage from you to the location you hit them.

  3. Phenomenal Evil

    Gold

    Permanently gain 1 Ability Power when you hit an enemy with an Ability. If taken after round 4, gain 40 Ability Power.

In game, Hexgate puts a badge under every augment card you are offered, with how often Cassiopeia players take it.

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Based on 12,933 Cassiopeia games in Arena on patch 26.20. Augments and items are ordered by how often Cassiopeia players take them; the bars compare each one with the most taken.

Best Augments for Cassiopeia by Rarity

Augment offers come in Silver, Gold and Prismatic. These are the cards Cassiopeia players take most at each rarity, most taken first.

Prismatic augments

  1. Spellwake
  2. Infernal Conduit
  3. Jeweled Gauntlet
  4. Doomsayer

Gold augments

  1. Magic Missile
  2. Phenomenal Evil
  3. Big Brain
  4. Transmute: Prismatic

Silver augments

  1. Mind to Matter
  2. ADAPt
  3. Witchful Thinking

Best Prismatic Items for Cassiopeia

The Prismatic items Cassiopeia players pick most often from the offer, most picked first.

  1. Runecarver
  2. Pyromancer's Cloak
  3. Detonation Orb
  4. Everfrost
  5. Innervating Locket
  6. Demonic Embrace

Cassiopeia Arena Build

Boots to start, then the items Cassiopeia players build most often in Arena, most built first. Adapt the order to the lobby: every other team is an opponent.

Starting boots

  • Sorcerer's Shoes
  • Gluttonous Greaves

Core items

  1. Rod of Ages
  2. Seraph's Embrace
  3. Rabadon's Deathcap
  4. Liandry's Torment
  5. Blackfire Torch
  6. Void Staff

Cassiopeia Skill Order

The order Cassiopeia players level their abilities in most often: max Twin Fang (E) first, then Noxious Blast (Q), and take Petrifying Gaze (R) whenever you can.

  1. ETwin Fang
  2. QNoxious Blast
  3. WMiasma
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FAQ

What are the best augments for Cassiopeia in Arena?

On patch 26.20 Cassiopeia players take Magic Missile, Spellwake and Phenomenal Evil most often.

What is the best Prismatic item for Cassiopeia?

The Prismatic items Cassiopeia players pick most are Runecarver, Pyromancer's Cloak and Detonation Orb.

What should Cassiopeia build in Arena?

Start with Sorcerer's Shoes, then the items Cassiopeia players build most: Rod of Ages, Seraph's Embrace and Rabadon's Deathcap. Adapt the rest to the lobby.

What is the best skill order for Cassiopeia in Arena?

Max Twin Fang (E) first, then Noxious Blast (Q), and level Petrifying Gaze (R) whenever you can.

Is Cassiopeia good in Arena?

On patch 26.20 Cassiopeia is S tier in the Arena tier list: excellent picks.

More S Tier Champions

Arena tier list for all champions · Cassiopeia in ARAM Mayhem

Champion names, art, items and abilities: Riot Games Data Dragon. Augment names, art and text: the game files. Hexgate is not endorsed by Riot Games.