ymir piece, Sahagin piece

Ymir piece & Sahagin piece — the fight that decides the comp.

• When the Ymir’s shell breaks, it crawls toward another shell. It’s very susceptible to Bind and Stun: Slime’s 30-second bind and Buffalo’s 15-second stun both land.
• Stun it (Buffalo Tempered Release → Parting Blow), then burst with Cu Sith’s Tempered Release and an instinctual combo — that’s enough to kill it before it re-shells. Parting Blow on the Sahagin, then Coeurl burns the rest.
• The alternative is bringing a Soulkin for the interrupt; bursting it down with Beastkin worked better.

Source: Mrhappy1227 — Third Board of the Unbroken LEGENDARY Rank Clear, via transcript.

Ymir Piece & Sahagin Piece — standard enemy.

Suggested trio: Buffalo, Diremite, Ice Golem — stun, root and an interrupt.

Abilities

• Paralyzing Spikes — buff on the Sahagin: hitting it paralyses you. Up from the start and whenever the Ymir gets a new shell. Not dispellable
• Water II — baited circles
• Blanket Thunder — raidwide — interruptible (War Cry works)
• Tsunami — wall knockback across ~90% of the arena — no pet cover
• Dreadwash — interruptible Hysteria

How to handle it

Borrow Soul Crush from Ice Golem, swap to Buffalo, and work the Ymir’s shell while never hitting the Sahagin with spikes up. Interrupt Blanket Thunder and Dreadwash (right after Tsunami). Once the Ymir is out of its shell, Parting Blow, swap to Diremite and Silkscreen-root it; then finish the Sahagin.

Alternatives: burst the Sahagin before spikes go up, or use Quelling Wave — it doesn’t reflect paralysis and your pet ignores it entirely.

Source: Icy Veins — Beastmaster Crucible of the Unbroken guide.