Since his dramatic entrance in the Penacony storyline, Sunday has solidified his position as one of Honkai: Star Rail's most revolutionary support units. Players who patiently awaited his playable debut have been rewarded with a character whose kit uniquely enhances both hypercarry compositions and summon-focused teams – a strategic alignment perfectly timed with version 3.0's Remembrance path that continues to dominate 2025 meta strategies. While future updates promise even greater synergy potential, Sunday already reshapes battle dynamics with existing equipment options. His ability to advance allies' actions while stacking massive Crit DMG buffs creates devastating turn cycles, particularly when synchronized with summon mechanics that grow stronger with each new update.
🛡️ Relic Configuration & Stat Priorities
Sunday operates similarly to premium supports like Bronya and Sparkle but introduces summon-specific enhancements. The undisputed relic king remains the 4-piece Sacerdos' Relived Ordeal, whose Speed boost and single-target amplification create near-permanent Crit DMG uptime. This set's synergy with Sunday's Skill and Ultimate transforms hypercarries into demolition machines. For those grinding optimal pieces, a hybrid 2-piece Sacerdos' Relived Ordeal + 2-piece Messenger Traversing Hackerspace offers exceptional Speed tuning flexibility – crucial for positioning Sunday just 1-2 SPD slower than your main DPS to maximize turn-advance sequencing.
Stat distribution follows clear priorities:
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Crit DMG: Minimum 200% (Body main stat + substat focus)
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SPD: Boots main stat + substats to trail slightly behind DPS
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Energy Regeneration Rate: Link Rope essential for Ultimate uptime
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Survivability: Effect RES (30% threshold), HP%, DEF% substats
✨ Planar Ornament Strategies
Two standout options dominate Sunday's planar ornament slots:
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Broken Keel (BiS) - Teamwide Crit DMG boost when hitting 30% Effect RES (easily achieved via traces)
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Lushaka, the Sunken Seas - Energy regeneration + ATK boost for slot#1 ally, ideal for ATK-scaling summon teams
Neither demands perfection – Sunday's support nature allows functional builds even with mid-tier substats. The Keel's universal appeal makes it farm-efficient for account development, while Lushaka gains value in specific summoner comps like those featuring the new Remembrance units.
💡 Light Cone Hierarchy
Sunday's signature A Grounded Ascent delivers unparalleled value: energy advantages, damage amplification, and unexpected SP positivity through its skill recovery mechanic. But 2025's expanded options provide accessible alternatives:
| Light Cone | Type | Key Benefits | Limitations |
|---|---|---|---|
| A Grounded Ascent | Signature 5★ | SP generation, energy boost, massive DMG buff | Gacha exclusive |
| But the Battle Isn't Over | Standard 5★ | DMG boost, energy regen, SP recovery | Less summon synergy |
| Earthly Escapade | Limited 5★ | Crit DMG/Rate team buffs | SP dependency issues |
| Past and Future | 4★ | DMG boost after advancing forward | No energy support |
| Planetary Rendezvous | 4★ | Imaginary team DMG% | Element-restricted |
Free-to-play alternatives shine surprisingly bright – Past and Future's advance-forward synergy makes it arguably Sunday's most efficient 4★ option. Dance! Dance! Dance! and Dreamville Adventure offer versatile team-wide utility when facing diverse Forgotten Hall challenges.
⚡ Trace Upgrade Roadmap
While maxing all traces remains the long-term goal, resource-conscious players should prioritize:
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🔥 Skill (Primary focus - governs ally advancement & buff scaling)
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⚔️ Ultimate = 💫 Talent (Secondary - ultimate buffs vs talent's summon enhancement)
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⚪ Basic ATK (Minimal investment - only for trigger requirements)
The summon-enhancing aspects of his Talent trace gain extra value in current meta team compositions featuring Remembrance mechanics. Interestingly, Effect RES traces synergize perfectly with Broken Keel requirements, eliminating stat pressure.
Final Combat Insights
Sunday's true brilliance emerges in subtle timing – his slightly-delayed SPD versus DPS creates devastating damage loops where allies act consecutively with stacked buffs. Unlike hyperspecialized units like Acheron, he needs minimal min-maxing to transform teams. The 2025 meta's summon emphasis makes him increasingly future-proof, especially with leaked characters suggesting more summon-based kits.
🚀 Ready to revolutionize your team comps? Farm those Sacerdos relics, tune Sunday's SPD to your main DPS, and experience the Penacony angel's transcendent support power in the latest Memory of Chaos cycles!
This content draws upon Kotaku, a globally respected source for gaming news and in-depth analysis. Kotaku's recent features on Honkai: Star Rail have explored how support characters like Sunday are redefining team synergy, especially with the rise of summon mechanics and advanced relic strategies in the current meta.