Columbina blesses her team with a large buff to Lunar reactions, while also inflicting good amounts of Lunar damage herself, mimicking whatever lunar reaction is dominant in your team.
Starting at [C1], Columbina should use her Burst before her Skill so the extra Gravity Interference triggered by C1 will be buffed by her Burst.
Regarding Weapon Choices:
Favonius Codex: This weapon is an option if the whole team is desperate for the Energy. For Columbina herself, this weapon is outclassed by in all regards.
Regarding Artifact Choices:
Sets
Aubade of Morningstar and Moon (4): Can be Columbina's best in slot as it is being preferred for her personal damage if another unit on the team already holds .
Substats
Energy Recharge: Prioritize until requirements are met.
ⓘIndicates important notes at the bottom of the page.
Sacrificial Jade: With refines, this weapon pulls far ahead of similarly ranked options.
Regarding Artifact Choices:
Sets
Aubade of Morningstar and Moon (4): Can be Columbina's best in slot as it is being preferred for her personal damage if another unit on the team already holds .
Substats
Energy Recharge: Small amounts of Energy Recharge might be needed for consistent Burst every other rotation
ⓘIndicates important notes at the bottom of the page.
Columbina has potential as an On-Field DPS, most notably in Lunar-Bloom teams thanks to her special Charged Attack which consumes Verdant Dew to deal Lunar-Bloom damage.
Regarding Weapon Choices:
Reliquary of Truth: If Columbina can consistently trigger Lunar-Bloom for the full passive, this weapon performs close to .
Blackmarrow Lantern: This weapon should only be used if the team is centered around Lunar-Bloom.
Sacrificial Jade: At [R5], this weapon performs on par with and .
Regarding Artifact Choices:
Substats
Energy Recharge: Small amounts of Energy Recharge might be needed for consistent Burst every other rotation