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Fate/Grand Order Artoria Caster ‘Castoria’ Guide - Skill sets, Synergies, and Best Team Compositions

Author:Kristen Update:May 03,2025

In the world of Fate/Grand Order, Artoria Caster, affectionately known as Castoria, has emerged as a game-changer. Introduced during the 5th Anniversary event, this 5-star Servant has become indispensable for players tackling challenging content or looking to optimize their farming strategies. Unlike her Saber counterpart, Castoria doesn’t wield a sword; instead, she empowers your team with powerful buffs, accelerates Noble Phantasm charging, and extends the longevity of your allies on the battlefield. As a premier Arts support, she transforms even mediocre Servants into formidable forces when strategically integrated into your team composition.

Limited Availability

Before diving into Castoria's capabilities, it's crucial to understand her limited availability. As a 5-star Servant, she appears exclusively on specific banners, typically during anniversaries or major story updates. If you spot her banner and are aiming to build an Arts-centric team, it's wise to consider using your Quartz to summon her.

What Makes Castoria Special

In the diverse world of Fate/Grand Order, Servants vary widely in their abilities. Castoria stands out with her focus on Arts synergy and team-wide support. Her skill set is designed to enhance NP gain, amplify damage output, and facilitate rapid NP looping. She shines brightest when teamed with Arts-oriented damage dealers like Space Ishtar, Summer Musashi, or Chloe.

Fate/Grand Order Artoria Caster 'Castoria' Guide - Skill sets, Synergies, and Best Team Compositions

When it comes to Append Skills, her third skill is particularly useful, as it boosts damage against Sabers—a class that can otherwise pierce through her supportive defenses.

Playstyle and Combat Tips

Castoria is best positioned in the backline, where she can support her team effectively. Although her direct damage output is modest, her buffs significantly enhance the performance of her allies. Deploy her Noble Phantasm frequently to maintain continuous buffs and mitigate the risk of enemy NP removal effects.

In boss encounters, coordinate her invincibility with another defensive skill to maximize protection without overlap. When farming, time her buffs to ensure your damage dealers capitalize fully on each NP chain.

Artoria Caster is more than just another iteration of Artoria; she's a top-tier support who has revolutionized combat strategies in Fate/Grand Order. Whether you're grinding through farming stages or facing off against high-difficulty challenges, Castoria is an invaluable asset to any team.

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