A build where Thoma acts as an off-field Pyro DPS. Thoma is only able to vape about 1/3rd of his Burst due to his ICD and hence you will want to focus on generally buffing Thoma’s DMG in this build, not just his Vaporizes. Compared to Burgeon Thoma, Off-Field Pyro DPS Thoma requires much higher investment due to his low multipliers compared to other off-field DPS units.
A beautiful weapon on Thoma both aesthetics and utility-wise. It helps balance out Thoma’s HP for his shield and still provides offensive stats to help with his damage. This weapon allows Thoma to run a full damage build that can be classified as a Hybrid one as well. Note that this weapon is only better than Calamity when Thoma is <50% HP.
An amazing weapon that increases Thoma’s ATK by a dramatic amount with no passive downtime. Thoma’s Burst is not able to snapshot, so the long uptime on the passive is fully taken advantage of as well as the increased damage off-field.
An excellent F2P weapon that helps with Thoma’s ER requirements and gives a nice bonus to his Fiery Collapse damage. The best 4 star weapon, only outdone by R5 Wavebreaker, and performs better than many 5 star options. Use it if it’s available.
A very solid weapon that helps with Thoma’s high ER needs, while also providing a nice ATK bonus along with ER. This weapon performs much better pre-C4.
Although you will not have full uptime on its passive, this weapon is still a good option by focusing on buffing his Vaped Fiery Collapses. Generally recommended to focus a bit more on EM substats with this weapon.
A good weapon for Thoma with its ER and high Base ATK. Passive won’t be used except for a trace amount of CRIT Rate.
If fortunate enough to obtain this weapon, it can be very nicely utilized by Thoma. At R5, Wavebreaker performs on par with and even better than many 5-stars.
Being mostly off-field, Thoma will not take advantage of its passive; however, in general, Thoma appreciates high ATK weapons, so you are still able to deal considerable damage with this weapon.
A weapon with high Base ATK and CRIT Rate. Mainly only good on Off-Field Pyro DPS Thoma as a stat stick. Passive won’t be utilized.
A nice weapon with its high CRIT Rate substat along with the ATK bonus.
Pure Damage:
Sands: ER% or ATK%
Goblet: Pyro DMG
Circlet: CR/CD
Hybrid:
Sands: ER% or HP%
Goblet: HP% or Pyro DMG
Circlet: CR/CD
Generally, you would want to have Kazuha or other DMG% buffs on the team while Thoma has an HP% Goblet to make up for the lack of Pyro DMG Bonus. If you are able to Burst off cooldown without an ER% Sands, it is favorable to use an HP% Sands instead of an HP% Goblet.
Pure Damage: ER% > Crit > ATK% > EM*
Shield Hybrid: ER% > Crit > HP% > ATK% > EM
*EM is just a “cherry on top” stat for Thoma and doesn’t need to be sought after.
Because of the inclusion of a second Pyro unit in the team (usually Bennett) who can funnel particles, Off-Field Pyro DPS Thoma will have lower ER requirements than Shield Support and Burgeon Thoma. That being said, it is generally not recommended to use weapons like Favonius Lance or Kitain Cross Spear on Off-Field Pyro DPS Thoma so he does not have those options to lower his ER requirements. Below is a table that shows ER baselines for Off-Field Pyro DPS Thoma.
These values are a baseline for you to go off of—you may need less or more depending on numerous factors.
Base: 200%+
With Funneling: 190%+
Base: 180%+
With Funneling: 170%+
The best set for Off-Field Pyro DPS Thoma; 4 Emblem benefits Thoma greatly by turning his ER requirements into significant damage.
A combination of artifact sets that assists with reaching Thoma’s ER requirements while also buffing his damage. Generally used as placeholder while farming for 4 EoSF.
A good option to boost Thoma’s Skill and Burst damage. However, you would need to get enough ER from substats.
A good overall option to increase Off-Field Pyro DPS Thoma’s damage output.
Boosts Thoma’s Pyro DMG, although he can’t effectively proc the full 4-piece set effect. Thoma also has standard ICD and won’t Vape as much to utilize the 4 CWoF effect.
Primarily used to buff Thoma’s Vaped Fiery Collapses. Like CWoF, due to his ICD, he will not utilize this combination the best.
Notable sets: 2 EoSF/2 18% ATK; 2 EoSF/2 NO
Mainly can be used as a placeholder until you’ve gained a good 4 Emblem set.
Elemental Burst > Elemental Skill
Normal Attacks are obsolete.
Thoma
Off-field DPS/Buffer (C6)
Tartaglia/Ayato
On-Field DPS/Enabler
Kazuha/Sucrose
VV Holder/Buffer
Bennett
Buffer/Healer
The two main units that are used in this slot are Ayato and Childe. Both are extremely good units and perform well in this role. Generally, Ayato allows for more flexibility as he has a set cooldown, while your rotations will affect Childe’s cooldown. However, Childe does have Riptide procs, which scale quadratically in AoE scenarios.
TL;DR: Both are good. Choose which one you like!
What about Xingqiu/Yelan?
Xingqiu and Yelan are options for this team; however, it is generally not recommended. Ayato and Childe will provide more damage for the team comparatively. Thoma, Xingqiu, and Yelan need an on-field Normal Attacker to proc their Bursts. None of the other units in this team would be equipped to do so while providing meaningful damage. Alternatively, you may run Heizou as your on-field unit to Normal Attack, although this is a damage decrease from Childe/Ayato.
Sucrose and Kazuha are the two main units used in this slot. Because of Thoma’s ICD and his inability to snapshot, Kazuha is the better option to both provide RES Shred with 4 Viridescent Venerer and a long lasting Pyro DMG Bonus (without on-field interruption) with his Burst; however, Sucrose is still viable for stronger Vapes.
Ayato—Sucrose
Extremely similar to Childe—Sucrose; however, it allows for much more flexibility as you do not have to manage Ayato’s cooldowns as with Childe.
Ayato Q > Thoma E Q > Sucrose N1 E > Bennett E Q > Ayato E N15
Ayato—Kazuha
As with above, this team is pretty flexible in rotations, and you don't have to follow this rotation strictly 100%.
Ayato Q > Thoma E Q N1 > Bennett Q E > Kazuha N1 hE Q > Ayato E N15 > Kazuha tE > Bennett E > Thoma E Q N1 > Bennett Q E > Kazuha N1 hE Q > Ayato Q E N15 (Q if possible)
Childe—Sucrose
This team comp is mainly focused on buffing Thoma’s Vaped Fiery Collapses while Childe provides a steady amount of on-field damage. It takes a bit more effort to Swirl both Pyro and Hydro in this team (hence the two Sucrose appearances on field), but if you have to Swirl one, make sure you are Swirling Pyro, which is quite easy in Bennett’s Burst. Sucrose’s Burst is not too important here, even if you have C6, as infusing her burst is quite unreliable. Throw it in wherever you need to.
Childe CA* > Sucrose N2 > Thoma E Q > Sucrose E > Bennett E Q > Childe E N2C (9-11s)
*can be replaced with Childe E N3
OR
Thoma E Q > Sucrose E > Bennett E Q > Childe E N2C (9-11s)
Childe—Kazuha
This team is extremely similar to the Childe-Xiangling-Kazuha-Bennett team, excluding the fact that Thoma’s Burst does not snapshot. Out of the options here, it is arguably the best for AoE.
Childe E > Bennett Q > Kazuha E Q > Thoma E Q > Childe Q E N2C 9-11s > Kazuha tap E > Bennett E (repeat till Thoma has Burst back while switching to Thoma so he catches particles) > Childe CA