The upcoming anniversary Limited character and one of the game’s most powerful support characters, Rhiannon is making her debut in Reverse: 1999. In this guide, we will go over everything players need to know to best build Rhiannon to her fullest support potential in Reverse: 1999
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Rhiannon Build Guide – Everything You Need To Know
General Introduction
Rhiannon is a 6-star Arcanist of the Beast Afflatus and is one of the game’s Limited Arcanist, releasing with the game’s anniversary. She is one of the game’s most powerful support characters, capable of providing the team with many important and powerful buffs while also being able to be fitted into any archetype teams thanks to her Universal Fit status.
Incantation Skill And Ultimate Analysis
To understand how Rhiannon works and how to best build her into a powerful Arcanist, we need to know how her Skill and Ultimate works:
| Babble-Gabble(Arcane Skill) | Rank | Effects |
 | 1 | [Adaptive] Mass attack. Deals 200% Mental DMG to all enemies. Before attacking, consume 1 stack of [Attunement] to increase own ATK by +12% for 1 round. When in [Aegis], this Incantation also reduces Critical DEF for all enemies by -15% (recalculates upon getting attacked). For every stack of [Rapport], reduce an additional -3% Critical DEF (up to 15%) for 3 rounds. |
| 2 | [Adaptive] Mass attack. Deals 300% Mental DMG to all enemies. Before attacking, consume 1 stack of [Attunement] to increase own ATK by +13% for 1 round. When in [Aegis], this Incantation also reduces Critical DEF for all enemies by -15% (recalculates upon getting attacked). For every stack of [Rapport], reduce an additional -3% Critical DEF (up to 15%) for 3 rounds. | |
| 3 | [Adaptive] Mass attack. Deals 500% Mental DMG to all enemies. Before attacking, consume 1 stack of [Attunement] to increase own ATK by +14% for 1 round. When in [Aegis], this Incantation also reduces Critical DEF for all enemies by -15% (recalculates upon getting attacked). For every stack of [Rapport], reduce an additional -3% Critical DEF (up to 15%) for 3 rounds. | |
| Importance: High | ||
| Analysis: Rhiannon’s main damage Incantation Skill that allows her to decrease enemies’ critical defenses based on her Rapport Stacks. | ||
| Sneaky-Peaky (Arcane Skill) | Rank | Effects |
 | 1 | [Buff] Mass buff. All allies gain [Flocksong] for 3 rounds. Consume 1 stack of [Attunement] to increase own Max HP by +12% for 3 rounds.When in [Aegis], this Incantation also grants +15% DMG Bonus to all allies (recalculates when allies attack). For each stack of [Rapport], grant an additional +3% DMG Bonus (up to 15%) for 3 rounds. |
| 2 | [Buff] Mass buff. All allies gain [Flocksong] for 3 rounds. Consume 1 stack of [Attunement] to increase own Max HP by +13% for 3 rounds.When in [Aegis], this Incantation also grants +15% DMG Bonus to all allies (recalculates when allies attack). For each stack of [Rapport], grant an additional +3% DMG Bonus (up to 15%) for 3 rounds. | |
| 3 | [Buff] Mass buff. All allies gain [Flocksong] for 3 rounds. Consume 1 stack of [Attunement] to increase own Max HP by +14% for 3 rounds.When in [Aegis], this Incantation also grants +15% DMG Bonus to all allies (recalculates when allies attack). For each stack of [Rapport], grant an additional +3% DMG Bonus (up to 15%) for 3 rounds. | |
| Importance: Highest | ||
| Analysis: Rhiannon’s main self buff skill that grants her massive stat boost and allows her to boost the damage output of the entire team when she is in her Ultimate mode. | ||
| Chirping Chorus (Ultimate) | Effects |
 | Mass buff. All other allies gain [Adar Llwch Gwin] for 3 rounds. All own Incantations gain [Aegis] for 4 rounds and they don’t require AP to cast. |
| Importance: Highest | |
| Analysis: Rhiannon’s Ultimate allows her to enter a special mode that enhances her Incantation Skills and make it so that her Incantation Skills does not cost AP, massively improving her support potential. | |
Inheritance Analysis
Additionally to her skills and abilities, her inheritance level will also affect Rhiannon’ performance in a team:
| Rank | Effects | Analysis |
| 1 | PrecognitionWhen [Raptor Kinship] energy reaches 100% (max 150%), Rhiannon can enter [Sensory Bond] before using Incantations. At the start of the round, gain 2 stacks of [Attunement]. Rhiannon is an [Universal Fit] character. Insight I At the start of the round, gain 1 stack of [Rapport] for 3 rounds. | This Inheritance allows Rhiannon to set up her special effect, allowing her to gain Rapport effects and gain extra turns in addition to being treated as a character with all archetype tags. |
| 2 | Upon entering combat, increase ATK by 5%. | An inheritance that boosts her attack stat. |
| 3 | Upon entering combat, gain +3 Moxie and funnel 70% energy into [Raptor Kinship]. At the end of the round, consume 1 stack of [Attunement] to gain +1 Moxie. | This Inheritance allows Rhiannon to activate her Ultimate extremely early and help her set up her support effects much more frequently. |
Rhiannon Playstyle And Combat Role Analysis
Rhiannon is one of Reverse: 1999 Limited Arcanist and is the game’s most powerful universal support character that has the ability to boost the damage output of the entire team massively while also being able to be used in any Archetype teams thanks to her effects.
Rhiannon’s most powerful effects and buffs come from the fact that she can grant herself extra AP to use more of her incarnation skill to both attack and buff allies while also providing allies with immensely powerful buffs. Rhiannon’s abilities revolve around her Rhaptor’s Kinship Energy, which, when generated enough, allows her to generate extra AP for herself and allow her to enter an extra turn at the start of the turn. At the start of the turn, she will deploy the Rapport effect, boosting the Affaltus Advantage Damage Modifiers.
When using her 1st Skill, Rhiannon will decrease enemies’ critical defenses, making them take more critical damage overall. With her 2nd skill, Rhiannon will buff herself with Ult Might, Incantation Might and Max HP effects. Upon using her Ultimate, Rhiannon enters a special state, allowing all of her incantation to not cost AP while also boosting the Attack and HP of allies proportional to her own Attack and HP stats. Additionally, when she is in this form, her 1st and 2nd skills’ effects are enhanced, with her 2nd skill granting the entire team’s extra damage boost based on her Rapport Stacks.
Best Psychubes And Resonance Build
Best Psychubes
As a universal Support Character, Rhiannon wants Psychubes that can help her boost her own stats and grants the entire team beneficial effects.
The best Psychube for Rhiannon is her signature Psychube:
 | The Soft Rain of Yesterday |
| Effect | Upon entering combat, if the carrier is [Universal Fit], increase own ATK and Max HP by +4%. After actively casting Incantations, all allies gain +1.2% DMG Dealt for 3 rounds (stacks 6 times). If the carrier is of the [Beast] Afflatus, after casting Ultimate, all allies gain +8% Crit DMG for 3 rounds. |
| Analysis | This Psychube helps boost Rhiannon’s Attack and Max HP while also allowing her to grant 2 additional buffs to the entire team, helping to optimize her support effects. |
Resonance Build
For Rhiannon, players should focus on using a Resonance build that boosts her Attack and Max HP stat to optimize her buff to allies when she is in her Ultimate mode.
Build Code: AD0GPQX8RTFTMUIxMTtQNANDIzQgOAFAAExATFA
Players should use the Equanimity piece to boost Rhiannon’s attack and Hp stats as much as possible to optimize her universal buff to the team while also improving her survivability,
Rolling Recommendation
Should You Roll For Rhiannon
Yes, Absolutely. Not only is Rhiannon worth rolling for simply because she is a limited Character in Reverse: 1999, she is by far the game’s most universal and powerful support character due to how potent her support effects and buffs are.
Thanks to her Universal Fit effect, Rhiannon can be used in any team as substitute support or a general support character that can provide the entire team with massive damage boosting and survival effects, helping to optimize the entire team’s damage output. If players lack any dedicated support character for any Archetype team at all, Rhiannon can most likely fill in the team instead to help optimize the team’s damage output regardless of the team’s dedicated Archetype support.
Rhiannon’s versatility makes her one of the simplest but most effective characters for players to have when team building, making her an absolutely crucial character to roll for in general.
Should You Roll For Extra Rhiannon Portraits
It Depends. Generally speaking, players should invest in any Limited Characters in general in Reverse: 1999 as they are really hard to come by and take a long time to be rerun. However, Rhiannon’s support effects are generally potent enough on their own at P0, making it so that players can still use her effectively even without extra copies.
That being said, Rhiannon’s Portrait levels does indeed boost her overall support effects potency the more players invest in her, so if players intend on making an investment, getting Rhiannon to P2 and P5 should be your priorities as these levels massively boost her support capabilities.
Conclusion
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