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S TierLuck / Drop Rate Boost

Radiant Rune

A Secret rune added in the Massive Update (March 25, 2026), obtained exclusively from the Infinite Tower. The Radiant Rune provides a Luck bonus, improving drop rates for rare items across the game — complementing Primordial Rune which focuses on damage. Exact max value is +26% Luck at max level. Pity reduced from ~7,500 to 6,000 floors in the Huge Update (May 10, 2026 — Alx #update-logs gold standard). Source: Beebom runes guide (2026-03-26, provisional) + Alx #update-logs (2026-05-10).

Updated May 12

Bonus & Scaling

PropertyValue
Bonus TypeLuck / Drop Rate Boost
Scaling+26% Luck (max Lv.60) [Provisional — awaiting Discord confirmation]. Source: Beebom (2026-03-26). Pity reduced to 6,000 floors (Huge Update May 10, 2026).
LocationInfinite Tower (Tower Island) — rare drop from Tower floors. Level 8,500+ required. Pity: 6,000 floors (reduced from ~7,500 in Huge Update May 10, 2026).
Cost (Fragments)Free (drop)

+26% Luck (max Lv.60) [Provisional — awaiting Discord confirmation]. Source: Beebom (2026-03-26). Pity reduced to 6,000 floors (Huge Update May 10, 2026).

How to Get Radiant Rune

Infinite Tower (Tower Island) — rare drop from Tower floors. Level 8,500+ required. Pity: 6,000 floors (reduced from ~7,500 in Huge Update May 10, 2026).

Rune Dungeon

Access the Rune Dungeon using a Dungeon Key. Clear all 15 waves for a chance at rune drops.

Drop Rate

Rare drop from the Rune Dungeon. Higher-tier runes have lower drop rates.

Rune Leveling

Max Level

Lv50

Duplicates Needed

502

Equip Limit

1 Rune

Runes are leveled by feeding duplicate copies. Each level increases the rune's bonus. Only one rune can be equipped at a time, so choose wisely.

Usage Tips

  • Luck runes are essential for farming builds to maximize drop rates from bosses.
  • Swap to a damage rune for boss fights where you need DPS, then switch back for farming.
  • Only one rune can be equipped at a time. Prioritize leveling your primary rune to Lv50 before investing in others.
newsecretmassive-updateinfinite-towerluckfarming

Used in Builds

Radiant Rune synergizes with 2 builds.

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At a Glance

Quick Overview

Radiant Rune

S Tier

Bonus

Luck / Drop Rate Boost

📍

Location

Infinite Tower (Towe

A Secret rune added in the Massive Update (March 25, 2026), obtained exclusively...

Tier Position

Ranked #5 of 11 in Runes

S+
2
S
3
A
1
B
3
C
1
D
1

Radiant Rune is in S Tier

Patch History

  1. Huge UpdateLatest
    • [May 10 PITY] Radiant Rune pity reduced: ~7,500 floors → 6,000 floors (Infinite Tower). Source: Alx #update-logs 2026-05-10 (gold standard).

Synergy Recommendations

Best Pairings & Synergies

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Radiant Rune — Info

Tier
S
Bonus Type
Luck / Drop Rate Boost
Scaling
+26% Luck (max Lv.60) [Provisional — awaiting Discord confirmation]. Source: Beebom (2026-03-26). Pity reduced to 6,000 floors (Huge Update May 10, 2026).
Location
Infinite Tower (Tower Island)
Cost
Free (drop)
Max Level
Lv50
Last Updated
2026-05-12