What are the best artifacts for Thoma in Genshin Impact?

Thoma is a 4-star Pyro character in Genshin Impact who primarily serves as a support and shield provider. His kit revolves around providing consistent shielding and Pyro application, making him a valuable asset in teams that rely on elemental reactions or need survivability. To maximize Thoma's potential, it is essential to focus on his artifact sets, main stats, and team synergies. Here is a detailed guide on how to build Thoma effectively.

First, let's discuss Thoma's mechanics. Thoma's Elemental Skill, Blazing Blessing, creates a shield that scales off his maximum HP. His Elemental Burst, Crimson Ooyoroi, deals Pyro damage and provides a stacking shield effect that refreshes with normal attacks. This makes HP the most important stat for Thoma, as it directly increases his shield strength. Additionally, Thoma benefits from Energy Recharge to ensure his Burst is available frequently, as it is his primary source of utility.

For artifact sets, the best options for Thoma are Noblesse Oblige and Tenacity of the Millelith. Noblesse Oblige increases Thoma's Elemental Burst damage and provides a team-wide attack buff when his Burst is used. This is ideal if you want Thoma to contribute more to team damage while still providing strong shields. Tenacity of the Millelith, on the other hand, boosts Thoma's HP and provides an attack buff to the team when his Elemental Skill hits an opponent. This set is excellent for maximizing Thoma's shield strength and team utility. If you are using Thoma in a reaction-based team, such as with Hu Tao or Yoimiya, you can also consider the Emblem of Severed Fate set, which increases Energy Recharge and Burst damage. This set helps Thoma maintain high uptime on his Burst while contributing more damage.

When selecting main stats for Thoma's artifacts, prioritize HP% on the Sands, Goblet, and Circlet. This ensures his shields are as strong as possible. For substats, focus on HP%, Energy Recharge, and flat HP. Energy Recharge is particularly important if you are using Thoma in teams where his Burst is essential for Pyro application or shielding. If you are using the Emblem of Severed Fate set, you can consider an Energy Recharge Sands to further boost his Burst uptime.

For weapons, Thoma benefits from polearms that provide Energy Recharge or HP. The best 4-star option is the Favonius Lance, which generates energy particles for the team when Thoma scores a critical hit. This helps Thoma and his teammates maintain their Bursts more consistently. Another great option is the Prototype Starglitter, which provides Energy Recharge and increases Thoma's attack after using his Elemental Skill. If you have access to 5-star weapons, the Engulfing Lightning is an excellent choice, as it provides Energy Recharge and boosts Thoma's attack based on his Energy Recharge. For a more budget-friendly option, the Black Tassel is a 3-star polearm that increases HP, making it a solid choice for maximizing Thoma's shield strength.

In terms of team composition, Thoma works well in teams that benefit from consistent Pyro application or need a strong shield. One popular team is Hu Tao, Xingqiu, Thoma, and an Anemo support like Sucrose or Kazuha. In this team, Thoma provides shielding and Pyro application, allowing Hu Tao to trigger Vaporize reactions consistently. Another strong team is Yoimiya, Yelan, Thoma, and Yun Jin. Here, Thoma's shields protect Yoimiya while she deals damage, and his Pyro application helps trigger reactions with Yelan's Hydro attacks. Thoma can also be used in Overload teams with characters like Raiden Shogun or Fischl, where his Pyro application triggers Overload reactions for additional damage.

When building Thoma, avoid the common mistake of focusing too much on damage stats like Attack or Critical Rate. While these stats can increase Thoma's personal damage, his primary role is to provide shields and support, so HP and Energy Recharge should always take priority. Another mistake is neglecting his Energy Recharge, which can lead to inconsistent Burst uptime and reduced utility. Always ensure Thoma has enough Energy Recharge to use his Burst frequently, especially in reaction-based teams.

For advanced optimizations, consider pairing Thoma with characters who can benefit from his Pyro application and shielding. For example, in a team with Ayaka or Ganyu, Thoma can provide consistent Pyro application for Melt reactions while also shielding the team. Additionally, you can use Thoma's Elemental Skill to trigger reactions like Vaporize or Overload before switching to your main DPS, maximizing his utility in combat.

In summary, Thoma is a versatile support character who excels in providing shields and Pyro application. To build him effectively, prioritize HP and Energy Recharge on his artifacts and weapons. Use artifact sets like Noblesse Oblige or Tenacity of the Millelith to enhance his team utility, and pair him with characters who benefit from his shielding and Pyro application. By focusing on these aspects, you can maximize Thoma's potential and make him a valuable member of your team.