Prioritizing Top-Tier Supports for the Fate/Grand Order 25 Million DL Banners

To maximize your account's potential during the 25 Million Downloads campaign in Fate/Grand Order, you should prioritize acquiring Artoria Caster (Castoria) and Oberon. These two Servants define the current meta, providing the most consistent and powerful support kits for both Arts and Buster farming compositions. Whether you are struggling with high-difficulty challenge quests or seeking faster farming efficiency, these supports offer the highest return on your Saint Quartz investment.

The Absolute Priority: Artoria Caster (Castoria)

Artoria Caster remains the undisputed top priority for any Fate/Grand Order player, regardless of their current roster. Her inclusion in your team immediately elevates your farming capabilities by enabling Arts-based looping, which is widely considered the most accessible and reliable farming method in the game. She provides essential party-wide Attack Up, Arts Performance Up, and a massive 30% NP gauge charge (plus additional battery utility), making her a "must-pull" even if you already own other support Servants.

Beyond her farming utility, Castoria is the premier defensive support. Her Noble Phantasm provides a unique "Anti-Purge" defense—a buff that allows your party to ignore a set number of hits regardless of the enemy's attack strength or Noble Phantasm damage. This makes her invaluable for clearing difficult challenge quests and story bosses where survivability is just as critical as offensive output. If you lack her, she should be your primary focus during this banner window.

The Buster King: Oberon

Oberon is the second essential priority, specifically for players focused on Buster-based compositions. He serves as the ultimate "finisher," providing a massive, albeit temporary, damage steroid that allows your DPS Servants to clear high-HP nodes that other supports simply cannot handle. His ability to boost Buster card effectiveness and provide a significant 70% NP battery makes him the backbone of modern Buster farming.

It is important to understand that Oberon is not a general-purpose support in the same way as Castoria. His kit is designed to end fights quickly, often at the cost of the DPS Servant's ability to act in subsequent turns (via his sleep debuff). Use him when you need to clear a specific wave of high-health enemies or when you are pushing for maximum damage output during event farming. His role is specialized, but in that role, he is unrivaled.

Comparison of Support Roles

When deciding how to allocate your Saint Quartz, consider the specific needs of your current DPS Servants. The following table highlights the primary utility of these two top-tier supports:

If you are a newer player who lacks a deep roster, prioritize Castoria first. Her flexibility allows her to work with a wide range of lower-rarity Servants, making it easier to build a stable farming team from scratch. Oberon is a powerful "force multiplier" that should be prioritized once you have a solid foundation of DPS and utility Servants already in place.

Evaluating Secondary Supports

While Castoria and Oberon are the clear leaders, the 25 Million Downloads banner may feature other support options. Be wary of spending your resources on secondary supports if you do not yet have the two primary pillars covered. Supports like Zhuge Liang (Lord El-Melloi II) or Reines are excellent, but they are generally outclassed by the sheer versatility of Castoria and the raw damage ceiling provided by Oberon in the current meta.

Only shift your focus to secondary supports if you already have the core pair and possess a specific need that your current roster cannot address. For example, if you find that your current farming teams lack specific attribute buffs or niche utility, you might consider other options. However, for 90% of players, skipping secondary supports to save for future limited banners or to build a deep reserve of Saint Quartz is the most strategic approach.

Strategic Timing and Resource Management

The 25 Million Downloads campaign is a significant milestone that often brings high-value banners. Because these banners are limited, you must enter them with a clear plan. Decide on your maximum spending limit before you start pulling to avoid depleting your reserves for future meta-defining characters. If you hit your target early, stop pulling immediately; having extra Saint Quartz for upcoming events is far more valuable than chasing extra copies of a support you already possess.

The Importance of Skill Investment

Always remember that these support Servants derive their strength from their skills. Once you acquire them, ensure you have the materials ready to prioritize leveling their skills to level 10. A support Servant is only as effective as their ability to charge NPs and provide buffs; failing to invest in their skills significantly lowers their value to your account.

Recommended Skill Priority:

1. Battery Skills: Always prioritize the skills that provide NP gauge charging (e.g., Castoria’s Charity of the Spirit) to ensure you can loop effectively.
2. Main Buff Skills: Once the battery is maxed, focus on the primary damage or Arts/Buster performance buffs.
3. Utility/Survivability: Level these last, though for Castoria, her defensive utility is so powerful that it should not be neglected for long.

Focus your farming efforts on skill gems and ascension materials as soon as you add these units to your roster. Without maxed skills, your "meta" support will struggle to keep up with the demands of high-difficulty nodes and event farming.

Conclusion: Making the Final Decision

For the 25 Million Downloads campaign, focus your resources on Castoria and Oberon. Castoria provides the stability and survivability necessary for 100% of the game's content, while Oberon provides the necessary burst damage to trivialize high-HP farming nodes. By prioritizing these two, you ensure your account remains competitive for years to come. Do not be tempted by secondary banners until your primary support foundation is rock solid.