Shikanoin Heizou's Anemo DPS build is roughly equal to his Elemental Mastery build assuming he isn't being used in an Electro-Charged team. He has very low Energy Recharge needs; At [C4] he can run 100% Energy Recharge.
Regarding Weapon Choices:
In teams where Shikanoin Heizou's damage is less potent, or his goal is to support the team with (4) and his A4, he can choose to run one of the support weapon options.
Lost Prayer to the Sacred Winds: In teams where Shikanoin Heizou and Bennett are used in the same team, this weapon is better than .
The Widsith: This weapon provides the highest possible critical hit single strike damage for Shikanoin Heizou. However, its long cooldown leads it to lack consistency, and it has a chance of obtaining the relatively useless Elemental Mastery buff for Anemo DPS Shikanoin Heizou.
Favonius Codex: This weapon can help lower Energy Recharge requirements for the team, as well as allow Shikanoin Heizou to run less Energy Recharge on himself.
Thrilling Tales of Dragon Slayers: This weapon offers a colossal 48% ATK buff to a party member at the expense of Shikanoin Heizou's damage.
Hakushin Ring: In Electro-Charged teams, this can be used to buff both Anemo, Hydro, and Electro damage, and scales well with refines. It is recommended to run Anemo DMG based artifacts on this build.
Prototype Amber: In teams where there is no healer, Shikanoin Heizou can use this weapon to help the team's survivability.
Regarding Artifact Choices:
Sets
Viridescent Venerer (4): Shikanoin Heizou should use this set unless someone else in the team has it.
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Indicates important notes at the bottom of the page.
Shikanoin Heizou does not get the same benefits from an Elemental Mastery build as other Anemo users do. He still has to level his talents, and allocate substats into offensive substats such as attack and crit to equal Anemo DPS. However it is notably better than Anemo DPS build if used in Electro-Charged teams.
Regarding Weapon Choices:
In teams where Shikanoin Heizou's damage is less potent, or his goal is to support the team with (4) and his A4, he can choose to run one of the following weapons.
Favonius Codex: This weapon can help lower Energy Recharge requirements for the team, as well as allow Shikanoin Heizou to run less Energy Recharge on himself.
Thrilling Tales of Dragon Slayers: This weapon offers a colossal 48% ATK buff to a party member at the expense of Shikanoin Heizou's damage.
Hakushin Ring: In Electro-Charged teams, this can be used to buff both Anemo, Hydro, and Electro damage, and scales well with refines. It is recommended to run Anemo DMG based artifacts on this build.
Prototype Amber: In teams where there is no healer, Shikanoin Heizou can use this weapon to help the team's survivability.
Regarding Artifact Choices:
Sets
Noblesse Oblige (4): Only use this set if you already have a (4) user on your team