Crucible Knight Siluria

Location and access

Hollow root beyond The Nameless Eternal City

Crucible Knight Siluria outside the hollow root

Starting Site of Grace: The Nameless Eternal City

Defeat Starscourge Radahn at the Radahn Festival in Redmane Castle. His defeat opens the starfall crater in Limgrave; it is not the sealed Siofra River overlook reached from the Four Belfries.
Return to the Mistwood near Fort Haight and find the new crater marked by floating rocks. Use the descending ledges and openings to enter Nokron, Eternal City.
Follow the rooftops down into Nokron's streets, then continue to the Mimic Tear boss. Defeat it and cross the long bridge beyond the arena.
Leave the bridge on the left where it opens into woodland. Follow the western cliff to Ancestral Woods grace, overlooking the lower rooftops.
From the upper woodland, go toward the trees beside Hallowhorn Grounds and the Spirit Jellyfish along the northern cliff. Use the lower ledge below the edge, then follow the descending path into the cave to Aqueduct-Facing Cliffs grace. You do not need to light the ancestor pillars.
Leave the cave toward the aqueduct. Drop onto the stone support leading to the building, then onto the lower ledge. A Crucible Knight patrols nearby, so wait for an opening before moving across.
Continue toward the building with water pouring out. Another Crucible Knight stands by the waterfall. Go north through the water channel, turn into the area on the right and climb the stairs through the arch. D's twin sits near this approach to the boss.
Defeat both Valiant Gargoyles. Afterward, activate Great Waterfall Basin grace and rest in the coffin beside the waterfall to reach Deeproot Depths.
From Great Waterfall Crest, head west onto the huge roots. Use the root descending on the left to cross the gap, then continue west past the giant ants to Deeproot Depths grace beside the Finger Reader. The Erdtree Avatar and the ant cave are optional detours.
Head north into the shallow water and ruins. The map is in the gazebo. Continue west beneath the large root and past the ghostly soldiers to The Nameless Eternal City grace beside an arch.
From The Nameless Eternal City, take the downhill path northwest into the lower ruins. Veer west around the tower guarded by Mausoleum Soldiers and a knight.
Find the Spiritspring west of that tower. Use Torrent to jump up to the northern plateau, then head west to the huge hollow root guarded by Crucible Knight Siluria.
Defeat Siluria for Siluria's Tree. The armor is a separate pickup: enter the hollow root she guarded and open the chest for Crucible Tree Helm, Crucible Tree Armor, Crucible Gauntlets and Crucible Greaves.

HP and damage negation

Values below are for solo play on the first playthrough. HP is maximum health. Temporary protection and other state changes are explained in the notes.

Solo, first playthrough

HP: 4,606

Damage type	Damage negation
Standard	35%
Strike	35%
Slash	35%
Pierce	35%
Magic	40%
Fire	20%
Lightning	20%
Holy	40%

Notes

Siluria’s Tree is the boss reward. The Crucible Tree armor set is in a separate chest inside the hollow root behind her and can be collected without defeating her.
Torrent is available for the approach and fight. Watch the plateau’s edges when riding around her, especially if you unlock the camera to turn.
When her spear glows and spins over her shoulder, expect a ranged attack. Move across its path rather than retreating directly along the projectile’s line.
The conjured blade in her free hand signals a grab. Keep room to dodge instead of trying to hold through it with a shield.
Her later winged plunge closes the distance quickly. Heal after a committed attack rather than assuming distance alone will keep you safe.
Lowering the nearby walking mausoleum removes its headless soldiers, making the surrounding plateau less crowded. That is optional preparation, not a prerequisite for Siluria.