Honkai: Star Rail Topaz and Numby Build

Deficit...

Single Target

Deals Fire DMG equal to 50% of Topaz's ATK to a single enemy.

Difficulty Paying?

Single Target

Inflicts a single target enemy with a Proof of Debt status, increasing the DMG it takes from follow-up attacks by 25%. Proof of Debt only takes effect on the most recent target it is applied to. If there are no enemies inflicted with Proof of Debt on the field when an ally's turn starts or when an ally takes action, Topaz will inflict a random enemy with Proof of Debt. Numby deals Fire DMG equal to 75% of Topaz's ATK to this target. Using this Skill to deal DMG is considered as launching a follow-up attack.

Turn a Profit!

Enhance

Numby enters the Windfall Bonanza! state and its DMG multiplier increases by 75% and CRIT DMG increases by 12.5%. Also, when enemies with Proof of Debt are hit by an ally's Basic ATK, Skill, or Ultimate, Numby's action is Advanced Forward by 50%. Numby exits the Windfall Bonanza! state after using 2 attacks.

Trotter Market!?

Single Target

Summons Numby at the start of battle. Numby has 80 SPD by default. When taking action, Numby launches follow-up attacks on a single enemy target afflicted with Proof of Debt, dealing Fire DMG equal to 75% of Topaz's ATK. When enemies afflicted with Proof of Debt receive an ally's follow-up attacks, Numby's action is Advanced Forward by 50%. The action Advance Forward effect cannot be triggered during Numby's own turn. When Topaz is downed, Numby disappears.

Explicit Subsidy

Enhance

Summons Numby when Topaz enters the overworld. Numby will automatically search for Basic Treasures and Trotters within a set radius. Using her Technique will regenerate 60 Energy for Topaz after Numby's first attack in the next battle. If Topaz is still in the team after using her Technique and defeating overworld enemies, a small bonus amount of credits will be added to the earned credits. A maximum of 10000 bonus credits can be received per calendar day. After using her Technique and defeating enemies in Simulated Universe, additionally receive a small amount of Cosmic Fragments with a small chance to obtain 1 random Curio.

Future Market

When enemies afflicted with Proof of Debt receive follow-up attacks, they will enter the Debtor state. This can take effect only once within a single action. The Debtor state increases the CRIT DMG of follow-up attacks inflicted on the target enemies by 25%, stacking up to 2 time(s). When Proof of Debt is removed, the Debtor state is also removed.

Bona Fide Acquisition

After Numby takes action and launches an attack, Topaz regenerates 5 Energy.

Seize the Big and Free the Small

Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10

Agile Operation

After Numby's turn begins, Topaz's action is Advanced Forward by 20%.

Inflationary Demand

Ultimate Lv. +2, up to a maximum of Lv. 15.

Incentive Mechanism

Numby's attack count during the Windfall Bonanza! state increases by 1, and its Fire RES PEN increases by 10% when it attacks.

Overdraft

When Topaz uses Basic ATK to deal DMG, it will be considered as a follow-up attack.

Financial Turmoil

Increases Topaz and Numby's DMG dealt to enemy targets with Fire Weakness by 15%.

Stonks Market

After Numby uses an attack while in the Windfall Bonanza! state, Topaz additionally regenerates 10 Energy.