Ancient Knights are the silent guardians of the Lost Citadel, towering armored warriors that stand dormant until you disturb them. They are one of the toughest melee threats in Irons Spells and Spellbooks, pairing a heavy two-handed blade with a large health pool and stubborn resistances. Wake one carelessly and it will punish you for it.
You meet them deep in the Nether, hidden inside piles of 
discarded armor. Breaking one of those piles awakens the knight sleeping within. Kill it and you claim 
Cinder Essence, a fire-themed material used to craft the Citadel’s cinderous gear.
Spawning
You will not find Ancient Knights wandering freely all the time. They stand inert as Armor Piles, heaps of discarded plate scattered through the Lost Citadel and the Ancient Battleground. Both structures generate deep in the Nether, in the same warm biomes that host Bastion Remnants.
Breaking an Armor Pile instantly awakens the knight inside it, and it attacks immediately. Never mine one unless you are ready to fight. The Lost Citadel sits low in the Nether, with its halls starting around Y 33. Though they can also spawn from Spawners, especially within the Lost Citadel.
The Echo of Tyros boss also calls Ancient Knights into its fight, summoning a fresh one about every twelve seconds and keeping a couple nearby at a time. These summoned knights vanish the moment the boss dies and drop nothing. Once the boss enters its soul phase, the knights it summons arrive as Restored Knights carrying the stronger 
Legionnaire Flamberge.
The Lost Citadel and the Ancient Battleground also hide 
Trial Spawners that summon Ancient Knights. Triggering one spawns knights in a wave, replacing them as you cut them down. It then locks for a long cooldown before it can activate again, so treat it as one big fight rather than something you can reset on demand. Clearing it out ejects a reward.
Breaking an Armor Pile instantly awakens a full Ancient Knight. Several piles sit close together inside the Citadel, so clear space and prepare before you touch one, or you will find yourself fighting two or three at once.
Behavior
Ancient Knights attack on sight and chase down players as well as most other creatures, sparing only the Nether’s fiery allies like the Echo of Tyros and their fellow knights. They fight purely with a heavy blade and never cast spells, despite their magical origins.
What makes them dangerous is the mix of a large health pool, heavy knockback, and hits that deal around 20 damage, roughly ten hearts, before your own armor softens the blow.
Attacks
The knight’s flamberge reaches about three and a half blocks, further than a normal sword, so staying just outside arm’s length is not as safe as it looks. Its strong knockback flings you backward on every hit, breaking your rhythm and giving it room to swing again. Most of the danger comes from three attack patterns.
Blade Combos
Chained sword swings
The knight throws upward, horizontal, and double slashes, each hitting for up to 20 damage within its long reach. When a swing lands, or when you raise a shield to block one, it often chains straight into a follow-up strike. Keep blocking or step out of range rather than trading a second hit.
Piercing Stab
Quick forward thrust
A fast straight thrust that pulls the knight slightly toward you as it lands. It recovers quicker than its other swings, so it is the attack most likely to catch you as you step back in to hit. Respect its speed and do not assume a small gap keeps you safe.
Lunge
Long-range dash
When you try to keep your distance, the knight leaps into a dash that closes several blocks in an instant and knocks you back on impact. It only uses this from range, so simply backing away will not keep you safe for long. Watch for the wind-up and sidestep the moment it commits.
Weaknesses and Immunities
The knight is not heavily armored, but its deep health pool means a weak blade takes a long time to wear it down. Bring the highest raw damage weapon you have and enchant it heavily rather than relying on chip damage. It also strongly resists knockback, so you cannot reliably stagger it to buy yourself space.
Fire and lava do nothing to it, and it ignores fall damage completely, so pits and drop traps are wasted effort in the Nether. Arrows and thrown attacks land for a quarter less damage than normal. Save your ammunition and commit to melee instead.
Its one real weakness is speed. The knight walks slowly and turns its body sluggishly, so circling around its side keeps you behind its swings. Strafe in a tight ring, land a few hits, then reposition before it faces you again.
Awakened Knight
Restored Knight
Drops
Ancient Knight Drops
Cinder Essence Every Ancient Knight you kill yourself drops one Cinder Essence, a fire-themed material used in the Citadel’s cinderous recipes. Hunting knights is the most reliable way to farm it, though it also turns up in Citadel and Ancient Battleground loot chests and drops from the Echo of Tyros. Gather a stack if you plan to craft or upgrade the Citadel’s fire gear.
Knights also have a 25 percent chance to drop 
Netherite Scrap, the rare material normally smelted from 
Ancient Debris. 
Looting raises that chance, so a Looting sword turns a Citadel raid into a steady source of Netherite. Only knights killed by a player drop loot, and the boss destroys any knights it summoned when it dies, so those give nothing.
FAQ
They rest inside Armor Piles in the Lost Citadel and the Ancient Battleground. Both structures generate deep in the Nether, in the biomes that also host Bastion Remnants such as Nether Wastes, Crimson Forest, Warped Forest, and Soul Sand Valley.
Break the Armor Pile. Destroying one awakens the Ancient Knight inside, and it attacks immediately. Be geared and ready before you strike, since several piles often sit close together.
Yes. They take no damage from fire, lava, or fall damage, and arrows hit them for a quarter less than normal. Rely on a strong melee weapon rather than fire enchantments or a bow.
Restored Knights appear only when the Echo of Tyros boss enters its soul phase and summons them. They carry the upgraded Legionnaire Flamberge instead of the Decrepit Flamberge, but they vanish when the boss dies and never drop loot.
Yes. The Lost Citadel and the Ancient Battleground also hold trial spawners that summon Ancient Knights. Each activation spawns a wave, then the spawner needs a long cooldown before it can go off again.
