Relic Database — 20 relics — June 2026

Updated 2026-06-06 — independent UTDX guide

Universal Tower Defense X Relic Guide

Filter and sort every UTDX relic by tier, type, and unit role. Includes a reroll probability calculator and role-matched pairings — not just a word list, an actual searchable reference.

TL;DR — Relic priority order for most accounts

1. Control unit first (Water God → Slow Duration Boost S). 2. Main boss-killer second (First Emperor/Alpha Devil → Damage Amp II or Fire Rate Boost S). 3. Support third (Virtual Idol → Aura Strength Boost S). 4. Farm unit last (Bulmo → Economy II A). Use the free code batch first — 40kInterestedWano! + Update2.75! together give 50 Relic Rerolls before spending any gems. Patch caveat: specific relic drop rates and effect ranges change after balance updates.

Relic Database — Filter and Sort

Every relic ranked by tier (S best, then A, B). Filter by tier, type, or unit role. Click a column header to sort. Relic effect ranges are modelled planning baselines; exact numbers shift after patches.

20 relics
Relic Tier Type Effect range Target role Best pairings Notes
Damage Amp I A Damage 12–16% base dmg boss killer Alpha Devil, First Emperor Most-seen damage relic; reliable floor before S-tier drops.
Damage Amp II S Damage 22–28% base dmg boss killer First Emperor, Strongest in History Endgame boss-killer relic. Target this first with the 40kWano code batch.
Fire Rate Boost S Fire Rate 14–18% attack rate boss killer Alpha Devil, Ancient Shinobi Best on long-cooldown burst carries. Adds cycles inside boss contact window.
Range Extender I B Range 1.2–1.8 tile range boss killer King Sailor, Crow Shinobi Situational; most useful on maps with short contact zones like Void Court.
Range Extender II A Range 2.2–2.8 tile range any carry King Sailor, Ant King Meaningful on Wano Bridge and Ant Island; less important on loop maps.
Aura Radius Boost A Aura 1.5–2 tile radius support Virtual Idol, Love Goddess Lets a support cover spread placements. Pairs well with crowded rush builds.
Aura Strength Boost S Aura 18–24% buff mag support Mimicry Sorcerer, Virtual Idol S-tier for supports in tight builds where radius is already enough.
Slow Duration Boost S Control 2–3.2s slow ext control Water God, Ice Empress Multiplies effective team DPS at Wave 100. Highest priority for control units.
Slow Strength A Control 12–18% slow power control Ice Empress, Water God Good when enemies have natural speed that reduces slow effectiveness.
Economy I B Economy 8–12% gold rate farm Bulmo, Fastcart Accelerates early-run upgrade schedule. Avoid on combat units.
Economy II A Economy 18–24% gold rate farm Bulmo Bulmo with Economy II can fund a full level-up on the main carry 2 waves earlier.
Cycle Reset A Cooldown 14–18% CD cut boss killer Alpha Devil, Nutaru Beast Best on high base-cooldown carries (~2.5s+). Beats flat DPS relic on those units.
Burst Window S Damage 28–36% burst dmg boss killer Strongest in History, Alpha Devil Rarest S-tier. Prioritise after securing a Slow Duration for the control slot.
Splash Amplifier A Damage 16–22% splash dmg splash Crow Shinobi, Greybeard Strong during add-heavy wave bands (26-50). Loses value on pure single-target maps.
Boss Penetration S Damage 20–28% boss dmg boss killer First Emperor, Nutaru Beast Drops from high-HP bosses (Wave 50+). Not obtainable via standard Relic Reroll.
Stat Composite B Composite 8–14% mixed stat hybrid Devil Hunter, Ant King Covers multiple stats weakly. Use only when targeting role is unclear early game.
Sustain Loop A Sustain 10–15% regen rate support Love Goddess, Ant King Savage Reduces downtime between engagement cycles. Useful in long-run sessions.
Anti-Armor A Damage 18–26% armor pen boss killer King Sailor, Ancient Shinobi Drops from Armor-type bosses (Goblin Captain, Wano Bridge Guard). Patch-dependent.
Multi-Target B Damage 6–10% per extra splash Underworld God, Ultiorra Small bonus per additional enemy hit. Scales up in dense add waves 26-50.
Initiative B Fire Rate 8–12% first strike any carry Bio-Android, Crow Shinobi Applies only to the first attack cycle. Limited value except for opener units.

Boss Penetration drops from Wave 50+ boss waves — not obtainable via standard Relic Rerolls. Anti-Armor drops from Armor-type boss waves. All other relics come from Relic Rerolls.

Relic Reroll Probability Calculator

Enter your target relic tier and how many Relic Rerolls you have. The calculator returns the probability of hitting at least one matching result and the expected number of rolls to get there — using community-observed drop frequencies (patch-dependent).

Probability of ≥1 hit: —
Expected rolls to first hit: —

Community drop rates are estimates based on player reports on BloxInformer and Pro Game Guides forums. Boss Penetration relic drops from boss waves and is not obtainable via standard Relic Rerolls. Numbers change after balance patches — treat as planning guidance.

Role × Relic Pairing Matrix

Each unit role has a specific relic priority. Using the wrong relic type is the most common inefficiency — it changes a number without changing results. Aim for the first listed S-tier; fall back to A-tier until S drops.

Boss-killer (First Emperor, Alpha Devil, Strongest in History)

SDamage Amp IISFire Rate BoostSBurst WindowADamage Amp IACycle ResetAAnti-Armor

Avoid: Aura Radius, Slow Duration, Economy relics

Control / CC (Water God, Ice Empress)

SSlow Duration BoostASlow StrengthAAura Radius Boost

Avoid: Damage relics, Fire Rate, Economy relics

Support / Aura (Virtual Idol, Mimicry Sorcerer, Love Goddess)

SAura Strength BoostAAura Radius BoostASustain Loop

Avoid: Damage relics, Cycle Reset, Economy relics

Hill / Ground DPS carry (King Sailor, Ancient Shinobi)

SFire Rate BoostSDamage Amp IIARange Extender IIAAnti-Armor

Avoid: Economy relics, Aura relics, Slow relics

Splash / Wave clear (Crow Shinobi, Underworld God)

SFire Rate BoostASplash AmplifierADamage Amp I

Avoid: Economy relics, Boss Penetration (low multi-hit)

Farm / Economy (Bulmo, Fastcart)

AEconomy II

Avoid: Damage relics, Fire Rate, Boss Penetration — Economy I is a valid floor if Economy II hasn't dropped yet.

Cross-link: Check the best trait for your unit before relicing — the trait slot and the relic slot compound, so align both before spending rerolls.

Relic Loadout Examples — Click to Expand

Three curated setups from community testing. These are not the only valid loadouts — they are reference points for different game phases. Click any card to see the full breakdown.

How to Obtain Relics in UTDX

There are three ways to get relics in Universal Tower Defense X:

  1. Relic Rerolls (standard) — the primary source. Each roll randomises the relic type and value for one unit slot. Use codes to get free rolls first.
  2. Boss wave drops (conditional) — Boss Penetration and Anti-Armor drop from specific boss waves. Boss Penetration requires Wave 50 or higher boss clears; Anti-Armor drops from Armor-type bosses.
  3. Stat Rerolls (crossover) — the Stat Composite relic can appear through Stat Rerolls. It covers multiple stats weakly, making it a temporary filler rather than a target.

Which codes give free Relic Rerolls?

As of May 2026, two active codes give Relic Rerolls directly:

Redeem both before any manual gem spend. Together they give 50 rerolls, which at community-observed S-tier drop rates (~1 in 6) gives roughly a 75–85% chance of getting one S-tier result if you accept any S-tier rather than chasing a specific value ceiling. Check the codes page for the latest active strings.

How to run a relic reroll session efficiently

Set one target before you start: a specific unit, a specific relic type, and a value range you will accept (not the maximum). Rerolling multiple units in one session splits your currency across slots and reduces the probability of hitting the target on any one unit. Stop once the result meets your stated condition — rolling past a good outcome in search of a marginal improvement is the most common waste pattern.

Linked tool: UTDX Reroll Strategy — the same stop-condition logic used for unit rerolls applies to relic sessions, with the same opportunity-cost framing.

FAQ

What are the best relics in Universal Tower Defense X?

Damage Amp II (S) and Burst Window (S) are the strongest for boss-killer carries. Slow Duration Boost (S) is the highest-value relic for control units like Water God because it multiplies the DPS of every surrounding carry. Aura Strength Boost (S) is best for support units like Virtual Idol.

How do I get more Relic Rerolls in UTDX?

Redeem active codes first — 40kInterestedWano! gives 25 Relic Rerolls and Update2.75! gives 25 Relic Rerolls. Both codes together cover a full targeted reroll session on one boss-killer. Gem-purchased Relic Rerolls are a secondary source.

How many rerolls does it take to get an S-tier relic?

S-tier relics appear in roughly 1 in 5 to 1 in 8 rolls depending on the relic pool depth. With 50 rerolls from the current code batch you have a roughly 70–85% chance of hitting at least one S-tier result if you set a reasonable value threshold rather than chasing the exact maximum.

What relic should I use on Water God?

Slow Duration Boost (S-tier). Water God's job is extending enemy time inside your carries' firing ranges. A 2.0–3.2 second slow extension adds more total team DPS at Wave 100 than upgrading any single carry's Damage relic.

Should I put a Damage relic on a farm unit?

No. Farm units like Bulmo should use Economy relics (I or II) that increase gold output rate. A Damage relic on a farm unit changes a stat number without changing the unit's actual job, wasting the relic slot.

What relic is best for Alpha Devil?

Cycle Reset (A) or Fire Rate Boost (S). Alpha Devil has a long base cooldown around 2.8 seconds, so reducing that interval fits more attack cycles into the boss contact window. On the fastest boss phases, Cycle Reset beats a flat Damage relic of the same tier.

Are these relic stats official or modelled?

These are community-modelled planning baselines from BloxInformer, Pro Game Guides, and Beebom testing. Developer-published relic exports are not available for every relic after each patch. Effect ranges are stated as min–max; exact numbers shift after balance updates.

What is Boss Penetration relic and how do I get it?

Boss Penetration is an S-tier relic that adds 20–28% damage against boss-type enemies. It drops from high-HP boss waves (Wave 50 and above) rather than from standard Relic Rerolls. The drop rate is low, so it should be treated as a bonus find rather than a farming target.