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Last updated: September 11, 2026
MU Online Errtel of Radiance – Punish & Every Option
On this page: Open the Slot · Get the Errtel · Every Option · The Procs · Levelling · Which Roll · FAQ
Errtel of Radiance is the fifth and rarest errtel. Anger, Blessing, Integrity and Divinity give flat elemental damage and defence — Radiance instead grants procs and active skills such as Punish, Bleeding and Bastion. It is the only errtel that cannot be crafted, and it goes in Socket 5, a slot that does not exist until you build the key. All numbers below come from a Season 21 server config and the Global MU client scripts.
Step 1 – Open the Radiance Slot
Pentagrams drop with two to four sockets and never the fifth. Socket 5 is opened only with an Expansion Scroll of Radiance Slot, assembled at Adniel from four different fragments. Sockets 1–4 take Anger, Blessing, Integrity and Divinity in that order; Socket 5 takes Radiance.
→
Slot of Radiance Assembly — 4 fragments, 100% success, 100,000,000 Zen. Use the scroll on the pentagram.Step 2 – Get the Errtel
Adniel’s Errtel Creation mix turns Mithril into a random errtel — Anger 40%, Blessing 30%, Integrity 20%, Divinity 10% — and can never produce a Radiance. The only route is the Disassemble button: break down spare errtels and ancient items for Elemental Powder, and 50 powder makes one Elemental Capsule.
×50 →
→Every line in the capsule is weighted equally, so with 22 entries each single line is about 4.55%:
| Elemental Capsule can contain | Entries | Chance |
|---|---|---|
| Rare / Unique pentagram (Icarus Scroll, Arca’s Prophecy, Harp, Orb, Lyra) | 5 | 22.73% |
| Errtel of Anger / Blessing / Integrity / Divinity | 4 | 18.18% |
| Fragment of Radiance Slot (1–4) | 4 | 18.18% |
| Elemental Powder | 4 | 18.18% |
| Elemental Rune | 2 | 9.09% |
| Errtel of Radiance | 1 | 4.55% |
| Blessing of Spirit | 1 | 4.55% |
| Expansion Scroll of Radiance Slot | 1 | 4.55% |
Capsules also come in Fire / Water / Earth / Wind / Darkness versions and the errtel takes the capsule’s element, so open the colour you run. The later Luminous Errtel Capsule holds only the five errtels — a 1-in-5 shot instead of 1-in-22.
Every Option, by Rank
One option per rank, drawn at random when the rank unlocks — you cannot choose or reroll it. Official is the Webzen client value, Server is this Season 21 config, which boosts the rare rolls and trims the common ones. Values run Level 0 → 10.
| Option | Official | Server | Lv 0 → 10 |
|---|---|---|---|
| Rank 1 — raw elemental stats | |||
| Elemental Damage (II) | 24.95% | 22.95% | 33 → 209 |
| Elemental Defense (II) | 24.95% | 22.95% | 13 → 107 |
| Elemental Attack Success Rate (II) | 24.95% | 24.95% | 150 → 605 |
| Elemental Defense Success Rate (II) | 24.95% | 24.95% | 150 → 605 |
| Elemental Damage (III) | 0.1% | 2.1% | 33 → 261 |
| Elemental Defense (III) | 0.1% | 2.1% | 13 → 135 |
| Rank 2 — defensive procs | |||
| Absorb Shield | 49.95% | 49.95% | 1 → 11 |
| Absorb Life | 49.95% | 48.95% | 1 → 11 |
| Bastion | 0.1% | 1.1% | 3 → 25 |
| Rank 3 — offensive procs | |||
| Bleeding | 33.99% | 33.99% | 100 → 500 |
| Paralyzing | 18% | 18% | 13 → 35 |
| Binding | 28% | 27% | 13 → 35 |
| Punish | 0.01% | 1.01% | 6 → 16 |
| Blinding | 20% | 20% | 50 → 85 |
| Rank 4 — Immune skills* | |||
| Can use Immune Skill I. | 70% | 70% | — |
| Can use Immune Skill II. | 30% | 30% | — |
| Rank 5 — Berserker skill* | |||
| Can use Berserker Skill I. | 100% | 100% | — |
*Ranks 4–5 exist only on servers that raise the errtel rank cap above 3; the official game stops at Rank 3. The (III) lines at Rank 1 are the rare upgrade — same option, higher ceiling (+261 vs +209 elemental damage).
What the Procs Do
| Proc | Rank | Chance | Effect |
|---|---|---|---|
| Punish | 3 | 0.01% | On a critical elemental hit, 30% chance to deal bonus damage equal to 6–16% of the target’s maximum Life. Scales off their HP pool, not your damage, so it shreds bosses and tanks. Capped at 250,000 elemental damage per proc. |
| Bleeding | 3 | 33.99% | Damage over time on hit, 100 → 500. Most common Rank 3 roll and the best for grinding — no critical needed, works on everything. |
| Binding | 3 | 28% | Chance to immobilise the target. They can still attack and cast, but cannot run — often the whole fight in Arca War and Castle Siege. |
| Paralyzing | 3 | 18% | Chance to cut movement speed and all healing by 90%. The healing cut is the PvP pick: it ends potion-spamming. |
| Blinding | 3 | 20% | Chance to cut the target’s Attack Success Rate by 50–85%. Defensive, brutal against physical classes. |
| Bastion | 2 | 0.1% | Below 20% SD, 50% chance to trigger Protection for 3–25 seconds. A rare panic button. |
| Absorb Shield | 2 | 49.95% | 30% chance to absorb 1–11% of incoming damage as SD. Near-certain roll. |
| Absorb Life | 2 | 49.95% | Same, converted to Life. SD is usually better on 4th-class characters. |
Immune Skill I / II (Rank 4) and Berserker Skill I (Rank 5) are active skills, not procs — Immune gives a damage-immunity window, Berserker trades defence for attack.
Levelling & Ranking
Level raises the value of options you already have; rank adds a new one. Rank-up needs the errtel at +7, and once ranked the previous rank can no longer be levelled. Levelling uses Elemental Runes at Adniel — 34 runes and 3,300,000 Zen for 0 → 10.
| Level | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Runes | 1 | 1 | 2 | 2 | 3 | 3 | 4 | 5 | 6 | 7 |
| Zen (k) | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
| Success | 8% | 75% | 7% | 65% | 6% | 55% | 5% | 45% | 4% | 4% |
Rank-up costs Spirit Powder plus Zen: R1→2 1× / 100k, R2→3 3× / 100k, R3→4 6× / 150k, R4→5 9× / 200k.
Which Roll to Aim For
| Playstyle | Rank 1 | Rank 2 | Rank 3 |
|---|---|---|---|
| PvM / grinding | Elemental DMG (III) | Absorb Shield | Bleeding |
| PvP duelling | Elemental DMG (III) | Bastion / Absorb Life | Punish, else Paralyzing |
| Arca War / Siege | ELE ATK Rate (II) | Absorb Shield | Binding or Paralyzing |
| Tank / survival | Elemental DEF (III) | Bastion | Blinding |
Since you cannot pick the roll, farm volume: keep every Radiance you pull, rank the useful ones and disassemble the rest back into powder. Note that Runedil’s Goldentune Harp and Lemuria’s Orb have built-in options that need an Errtel of Radiance at Rank 1 +7 to activate, so even a plain one earns its slot.
Continue Reading
| Guide | Why it helps |
|---|---|
| Pentagrams & Errtels | The full elemental system the Radiance slot belongs to. |
| Arca War | Guild war fought purely with elemental damage — where Radiance procs decide fights. |
| Ancient Sets | Spare ancients are disassembly fuel for Elemental Powder. |
FAQ
How do you get an Errtel of Radiance in MU Online?
Only from Elemental Capsules. Disassemble spare errtels and ancient items into Elemental Powder, combine 50 powder into an Elemental Capsule, then open it. It cannot be crafted from Mithril at Adniel like the other four errtels.
What is the Punish option on Errtel of Radiance?
A Rank 3 option. On a critical elemental hit it has a 30 percent chance to deal extra damage equal to 6 to 16 percent of the target maximum Life, capped at 250,000 elemental damage per proc.
What are the chances of getting Punish?
On the official client table Punish is 0.01 percent of the Rank 3 pool, the rarest single errtel option in the game. Private servers commonly raise it; the Season 21 configuration used here sets it to 1.01 percent.
How do I unlock the Radiance slot on a pentagram?
Socket 5 is opened with an Expansion Scroll of Radiance Slot. Collect the four Fragments of Radiance Slot from Elemental Capsules and combine them at Adniel, then use the scroll on the pentagram.
What options can an Errtel of Radiance have?
Rank 1 gives elemental damage, defence or success rate in a (II) or rarer (III) tier. Rank 2 gives Absorb Shield, Absorb Life or Bastion. Rank 3 gives Bleeding, Binding, Paralyzing, Blinding or Punish. Extended-cap servers add Immune Skill I and II at Rank 4 and Berserker Skill I at Rank 5.
Can I reroll an Errtel of Radiance option?
No. The option is drawn at random when the rank is unlocked and cannot be changed. The only way to chase a specific roll is to obtain more errtels.