best builds for thoma
Thoma in-game

Thoma is a 4-star Pyro pole-arm character currently residing in Inazuma. He is the first introduced when the player and Paimon travel to Inazuma.

Originally from Mondstadt, Thoma left his homeland with his family at a young age. He now works as the housekeeper of the Kamisato Clan and is well regarded amongst the people of Inazuma. Thoma is a very friendly and approachable person, but is also hardworking as well. He is known to have a wide network of people that he uses to get information and anything else he may need. As the housekeeper of the Kamisato Clan, Thoma is great at cooking, cleaning, sewing, and even gardening! H takes pride in being the attendant of the Kamisato siblings and is extremely loyal to them.

Fun Fact: Thoma is great with animals, and will often have small snacks prepared for any stray animals he may come across.

Thoma Skill Talents

Thoma is best used as off-field support due to his skill to protect the team and deal passive Pyro DMG. His physical attack has a low damage output.

thoma explained
Thoma’s normal and charged attack

His normal attack, Swiftshatter Spear, will perform up to 4 attacks with his spear. The last strike will hit the hardest, while the second hit will deal the least damage. The 3rd strike will hit the enemy 2x. During the fourth strike, Thoma will also throw his pole-arm toward the enemy and launch smaller enemies a small distance. Thoma won’t have a use for his normal attack if you are using him as a support character.

thoma skill explained
Thoma’s elemental skill

Thoma’s elemental skill, Blazing Blessing, will trigger a Pyro-blazing kick at nearby enemies and summons a Blazing Barrier while infusing Thoma with the element of Pyro. This barrier will scale off Thoma’s Max HP and absorb up to a portion of the damage inflicted to the active character. The barrier will last 8 seconds, but its duration and damage absorption are reset once another Blazing Barrier is obtained. This skill does come with a 15-second cooldown, making it hard to maintain the shield without the proper Max HP investment on Thoma’s stats. Using the skill will also allow Thoma to clean any element that he may have gotten from the enemy. There is a restriction on the damage absorption, but that is also based on Thoma’s Max HP.

thoma's burst
Thoma’s burst

Thoma’s elemental burst, Crimson Ooyoroi, slices the enemy with Pyro DMG and activates the Scorching Ooyoroi. When the Scorching Ooyoroi is active, the current character’s normal attack will trigger Fiery Collapse every 1 second to launch a Pyro wave toward the enemy and summon a Blazing Barrier. This barrier has the same effect as the one from his elemental skill, but absorbs less damage. If you are able to consistently trigger Fiery Collapse, Thoma’s shield will refresh its duration and stack the damage absorption of the new and old shield together. This skill lacks the range compared to Xingiqu’s burst, but will help reset his shield each time it is triggered. However, it does come with a high energy cost of 80 and a 20-second cooldown.

Thoma Passive Talents

thoma artifacts
Thoma’s talent screen

Thoma’s ascension talent increases his team’s shield strength and the damage of his elemental burst. His passive talent is only useful while fishing.

Thoma’s passive talent, Snap and Swing, has a 1/4 chance to double the amount of fish obtained when Thoma is in the party. This talent doesn’t have a use in battle, but is a beneficial talent to have while fishing to obtain more resources. Fishes can be traded in to collect exclusive items like The Catch weapon or fishing rods!

His first ascension talent, Imbricated Armor, increases the shield strength of the active character when Thoma’s shield is obtained or refreshed. This effect can stack up to 5 times and can be triggered every .3 seconds. This is more effective with his elemental burst, as his skill can only trigger a shield every 15 seconds. Overall this talent will allow his shield to absorb more damage as its duration will reset and its damage absorption will stack with the new shield.

Thoma’s fourth ascension talent, Flaming Assault, boosts the damage of Thoma’s elemental burst passive Pyro attack by a portion of his max health. This talent will help increase Thoma’s burst damage depending on how much health he has.

Thoma gets a boost to his ATK based on his ascension rank.

Snap and Swing
Unlocked Automatically

When you fish successfully in Inazuma, Thoma’s help grants a 20% chance of scoring a double catch.
Imbricated Armor
Unlocked at Ascension 1

When your current active character obtains or refreshes a Blazing Barrier, this character’s Shield Strength will increase by 5% for 6s.
This effect can be triggered once every 0.3 seconds. Max 5 stacks.
Flaming Assault
Unlocked at Ascension 4

DMG dealt by Crimson Ooyoroi’s Fiery Collapse is increased by 2.2% of Thoma’s Max HP.

Thoma Constellations

thoma c1 build
Thoma’s constellation

Thoma’s constellation levels decrease his long cooldown and provide upgrades to both his elemental burst and shield.

Thoma’s first constellation level, A Comrade’s Duty, decreases the cooldown of both his elemental skill and burst by 3 seconds when his teammates are attacked while protected by his shield. This effect does not work on Thoma and can only trigger every 20 seconds. Both Thoma’s skill and burst have long cooldowns so this constellation will help reduce them.

His second constellation, A Subordinate’s Skills, increases the duration of Thoma’s burst from 15 seconds to 18 seconds, allowing it to deal more damage over time.

At C4: Long-Term Planning, Thoma will regain 15 energy when he uses his burst. His burst does have a high energy cost, so this constellation will help minimize the energy needed to use his burst again.

Thoma’s final constellation, Burning Heart, boosts the normal, charged, and plunging attack of any character protected by his shield. This talent is a great support buff for your Main DPS, allowing them to deal more damage.

Constellation LevelsEffects
C1: A Comrade’s DutyWhen a character protected by Thoma’s own Blazing Barrier (Thoma excluded) is attacked, Thoma’s own Blazing Blessing CD is decreased by 3s, while his own Crimson Ooyoroi’s CD is decreased by 3s. This effect can be triggered once every 20s.
C2: A Subordinate’s SkillsCrimson Ooyoroi’s duration is increased by 3s.
C3: Fortified ResolveIncreases the Level of Blazing Blessing by 3.
Maximum upgrade level is 15.
C4: Long-Term PlanningAfter using Crimson Ooyoroi, 15 Energy will be restored to Thoma.
C5: Raging WildfireIncrease the Level of Crimson Ooyoroi by 3.
Maximum upgrade level is 15.
C6: Burning Heart
When a Blazing Barrier is obtained or refreshed, the DMG dealt by all party members’ Normal, Charged, and Plunging Attacks is increased by 15% for 6s.
Elemental Mastery is increased by 200 when HP is above 50%.

Shield Build

shield thoma genshin impact
Shield Build for Thoma

Thoma is best used as shield support through the use of his elemental burst that will refresh the duration of his shield each time its passive Pyro attack is triggered. You will want a mix of HP and Energy Recharge investments in his stats to lower the cost of his burst and maximize his shield strength. His ascension talent will also help boost the active character’s shield strength when they obtain a new shield or refresh the current one. You will want to mainly level up his burst. His skill will also be great to provide a shield as well. Thoma’s normal attack is optional as you won’t be using it often in a support role.

As a shield creator, Thoma can work in a variety of teams. He can be paired with another Pyro character like Hu Tao to grant the team more ATK with the Pyro resonance and also allow his burst to charge up quicker. Xingqiu will be used as support for Hu Tao while also healing the team with his Rain Sword. Sucrose is a great character for reaction teams, but can be replaced with another support like Kazuha to increase Hu Tao’s elemental damage.

You will want an Energy Recharge stat on his weapon so both the 5-star Skyward Spine or the Engulfing Lightning can be great weapons for Thoma. The Engulfing Lightning is more suited for a support build, as the Skyward Spine has a passive that requires Thoma to use his normal attack to activate. The Engulfing Lightning on the other hand boosts Thoma’s ATK based on his Energy Recharge and provides an Energy Recharge boost after using his burst.

For his 4-star weapons, you will want to go with The Catch as it is a free-to-play weapon and is easy to obtain by trading in fish. This weapon will increase Thoma’s Crit Rate and elemental burst damage. It also has an Energy Recharge sub-stat. You also have the option of using the Favonius Lance, another Energy Recharge weapon, to provide energy for the entire team when Thoma lands a Crit Hit.

For craftable weapons, you may use the Prototype Grudge due to its Energy Recharge stat, but its passive does boost his normal attack, which will be wasted for an off-field support. The Kitain Cross Spear is another decent option that will boost Thoma’s elemental mastery for reaction damage. It also increases the damage of his elemental skill and gets him an extra energy boost after sacrificing a small portion of energy.

In the early game, use the 3-star Black Tassel to raise Thoma’s HP. Its passive will help boost the damage against slime enemies.

For Thoma’s artifact set, go with a 2-piece Tenacity of the Millelith and Emblem of Severed Fate to give Thoma a boost to his Energy Recharge and Max HP. A full set of Tenacity of the Millelith won’t be beneficial to Thoma due to the long cooldown of his elemental skill. You can use a 4-piece Emblem of Severed Fate if you are more focused on his burst damage instead of his shield strength. In the early game, use the 4-piece The Exile to boost Thoma’s Energy Recharge and provide energy for the team when he uses his burst.

Thoma’s main artifact stats:

  • Sands: HP% or Energy Recharge%
  • Goblet: HP%
  • Circlet: HP%

For the sub-stats, you will want to mainly focus on HP or Energy Recharge for a shield strength build.

Support Build

builds for thoma
Support Build for Thoma

This build is similar to the first build, but uses the 4-piece Noblesse Oblige to give Thoma an extra damage buff to his burst and increase his team’s ATK after using his elemental burst. Thoma will still rely on his shield for this burst, so you will want to max out the level for his burst and skill.

For Thoma’s teammates, Tartaglia will serve as the main DPS, while Xingqiu will serve as his support to heal and apply Hydro to enemies. Kazuha will help increase elemental damage and spread elements around with his elemental skill and burst. Thoma’s main role will be to shield his team and apply Pyro to enemies for reaction damage. If you have Thoma at C6, then the normal attack buff will also help increase Tartaglia’s damage.

You can use the same weapons as the first build, but if you don’t have access to the Engulfing Lightning or Skyward Spine, then the 4-star weapons are still viable for Thoma. The Staff of Homa is another great 5-star weapon for Thoma, due to its HP increase. This weapon is more focused on damage, due to the Crit DMG passive boost. Use the Favonius Lance if you want to provide the team with more energy, while you can use The Catch you boost the damage of his burst.

If you are more focused on Thoma’s burst damage output, use a 4-piece Emblem of Severed Fate for a raw power increase or the 4-piece Crimson Witch of Flames to raise his Pyro damage and increase the power of his reactions.

For Support:

  • Sands: HP% or Energy Recharge%
  • Goblet: HP%
  • Circlet: HP%

For Damage:

  • Sands: Energy Recharge%
  • Goblet: Pyro DMG Bonus% or HP%
  • Circlet: Crit Rate or Crit DMG

Sucrose will boost the elemental reaction damage of the team, while also serving as crowd control.

Hu Tao and Thoma will activate the Pyro resonance buff for the team. She is also a great Pyro DPS that relies on having low HP to deal damage. Thoma will protect her with his shield.

Xingqiu will trigger Vaporize with his Rain Swords. He can also heal and absorb damage with his swords.

Bennett is another Pyro support character that pairs well with Thoma. While Thoma protects the active character, Bennett can buff their attacks and heal.

Kazuha can increase the elemental damage of the team with the element he Swirls with. His burst can also apply elements to enemies within its range.

Tartaglia can make use of Thoma’s burst to trigger the vaporize reaction.

Can provide shields with elemental skill and burstHigh Energy Cost Burst
Passive Pyro attacks with burstLong cooldown for elemental skill and burst
Shield and a portion of burst damage increased with Max HPThe range of his burst isn’t the best


thoma genshin impact
Thoma’s hangout event

Thoma lives up to his title of being a protector from afar with his ability to create a shield for his team with both his elemental skill and burst. He is best used as a Pyro off-field support as he doesn’t have the best damage output on his own. His most important talent is his burst as it can produce passive Pyro attacks and refresh the duration of his barrier. He does come with some drawbacks as his damage scaling is low and both his skill and burst have a long cooldown between uses. You will want to heavily build on his HP to bring out the max strength of his shield.

What do you think of Thoma? Is there anything I missed? Let us know in the comments below! You can also reach out through our Twitter or my Discord handle Seyfrid#2589.

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*Images of gameplay owned by miHoYo


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