What I use

[Herrscher of Human: Ego] ATK:

S0 = 501 ATK

Divine Key sync = 114 ATK

Dorm Squad = 85 ATK

Affix = 92 ATK (total from 3 pieces)

Total ATK = 1409 ATK

Other = 0.47 SP/s

All equipment are at max

No Emblem

Divine Key active: 1.6 SP

Reverist Calico: no ATK affix

Haxxor Bunny: no ATK affix

Round 1

Round 1 is focusing on ELF’s Ultimate effects in one cycle.

Enemy in this test can be easily knocked airborne. When enemy was in the air (too high), Pardo’s off-field cat bomb (Rime Trauma) couldn’t hit enemy. So in this single cycle test, enemy only could be frozen once.

Some enemies can be frozen twice in one cycle. At that case, Elf Elysia’s performance should be better than her performance in this test. Means, gap between Water’s Edge and Elf Elysia can be slightly bigger than the gap in this test.

Round 2

Round 2 is an example for condition where ELF with 31.5s CD or below can unleash Ultimate twice, while ELF with 45s CD can only unleash Ultimate once.

At 3★ or 4★, Elf Elysia could unleash Ultimate twice in this test since Ultimate CD is 31.5s.

But 2★ Elf Elysia has 45s CD, she could only use Ultimate once in this test. But even with only 1 Ultimate, team with 2★ Elf Elysia (1 ELF ult) can deal similar DMG to team with 2★ Water’s Edge (2 ELF ult).

2★ Elf Elysia can extend freeze duration caused by all characters to enemy by 10%. If enemy can be frozen easily, 2★ Elf Elysia (1 ELF ult) might be able to beat 2★ Water’s Edge (2 ELF ult).

2★ Elf Elysia also already has switch CD reduce. It may allow us to use more various rotations. In some cases, might be better than 3★ Water’s Edge.

Summary

2★ Elf Elysia is usable, but 3★ is really recommended. Better debuff and reduce her Ult CD from 45s to 31.5s.

4★ is just small upgrade (ELF self DMG), not worth for most players.

3★ Elf Elysia can easily beat 4★ Water’s Edge. In real battle, the gap should be bigger than in this test.

Gather Comparison

Pressing all ELF Ult buttons at the same time:

✦ Blade Durandal & Elf Elysia start the gather earlier (fast cast) than Water's Edge.

✦ Elf Elysia ends the gather earliest (shortest gather duration).

✦ Blade Durandal & Water’s Edge end the ultimate with final explosion at the same time.

✦ Water’s Edge's gather force can be enhanced (strongest gather).

Gather Range:

✦ Water’s Edge can gather all enemies perfectly from any position (in this test), she has the largest gather area.

✦ Blade Durandal & Elf Elysia h**e similar area. But sometimes, Elf Elysia is not consistent due to her blink problem (only in a few runs, check the video). When activating Ultimate, sometimes she blinks at the wrong position to activate ultimate and then only gathers 1 enemy. Meanwhile, Blade Durandal can gather at least 2 enemies in this test.

In short, in terms of gather skill:

Water's Edge (large area, long duration) > Blade Durandal > Elf Elysia (small area, short duration)