Waveriding Whirl reduces swimming Stamina use and grants temporary Max HP after its wielder uses an Elemental Skill. Consider it for an HP-scaling catalyst user, especially when the party includes Hydro characters; its exploration benefit is separate from its combat buff.
An HP-scaling catalyst user who can trigger the Skill condition
Swimming exploration where reduced Stamina consumption is useful
Combat effect and party condition
After using an Elemental Skill, the wielder gains Max HP for 10 seconds, with a 15-second trigger interval. At R1, the base increase is 20%, plus 12% for each Hydro character in the party, up to 24% from that party condition. The base and Hydro portions are distinct. Refinement raises these percentages, while the cap on the Hydro portion also rises.
Exploration and build fit
The weapon reduces swimming Stamina consumption by 15%, independent of the temporary Skill-triggered HP effect. Its Energy Recharge secondary stat is distinct from the HP passive. A Thousand Floating Dreams is Elemental Mastery-focused with party Elemental Mastery support, while Angelos' Heptades grants its party damage effect after its wielder creates a shield; neither has Waveriding Whirl's swimming benefit or the same HP condition.
Upgrading and caveats
Ascension covers six stages. Refinement consumes a duplicate and Mora, improving the Skill-triggered HP values. Do not count the additional HP without using the Elemental Skill, and do not exceed the stated Hydro-character cap when calculating the party contribution.
Limitations and tradeoffs
The combat HP increase is temporary and requires an Elemental Skill.
The swimming benefit is useful for exploration but does not itself improve combat damage.
Common mistakes to avoid
Treating the Hydro contribution as unlimited; it is capped.
Confusing the permanent swimming Stamina reduction with the timed HP effect.
Effects and reference details
Refinement effects
R1 Decreases Swimming Stamina consumption by 15%. In addition, for 10s after using an Elemental Skill, Max HP is increased by 20%. For every Hydro Elemental Type character in the party, Max HP is increased by another 12%, and the maximum increase that can be achieved in this way is 24%. Can be triggered once every 15s.
R2 Decreases Swimming Stamina consumption by 15%. In addition, for 10s after using an Elemental Skill, Max HP is increased by 25%. For every Hydro Elemental Type character in the party, Max HP is increased by another 15%, and the maximum increase that can be achieved in this way is 30%. Can be triggered once every 15s.
R3 Decreases Swimming Stamina consumption by 15%. In addition, for 10s after using an Elemental Skill, Max HP is increased by 30%. For every Hydro Elemental Type character in the party, Max HP is increased by another 18%, and the maximum increase that can be achieved in this way is 36%. Can be triggered once every 15s.
R4 Decreases Swimming Stamina consumption by 15%. In addition, for 10s after using an Elemental Skill, Max HP is increased by 35%. For every Hydro Elemental Type character in the party, Max HP is increased by another 21%, and the maximum increase that can be achieved in this way is 42%. Can be triggered once every 15s.
R5 Decreases Swimming Stamina consumption by 15%. In addition, for 10s after using an Elemental Skill, Max HP is increased by 40%. For every Hydro Elemental Type character in the party, Max HP is increased by another 24%, and the maximum increase that can be achieved in this way is 48%. Can be triggered once every 15s.
