Universal Tower Defense X Relics: The Ultimate Guide to Rarities, Sets, and Stats

Master the Universal Tower Defense X relics system! Learn about rarities, set bonuses, Raid stars, main stats, and best relic sets.

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Relics

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Updated

2026-06-22

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Why Relics Are the Backbone of Your UTDX Loadout

If you've been grinding in Universal Tower Defense X, you know that raw unit power only gets you so far. The real game-changer lies in the Universal Tower Defense X relics system. These equippable items provide massive stat boosts, unique set effects, and game-altering passive bonuses that can turn a decent unit into an absolute powerhouse. Whether you're farming early-game waves or pushing endgame Raid content, understanding how relics work is non-negotiable.

Relics aren't just about equipping the shiniest piece you find. They come in distinct rarities, types, and sets — each with its own strategic purpose. From the humble Rare relic to the coveted 3-star Raid relic, the system is deep enough to reward careful planning. In this guide, we'll break down every facet of the Universal Tower Defense X relics system so you can optimize your loadout, maximize your damage output, and dominate the battlefield.

Relic Rarities: From Rare to Raid

Relics in Universal Tower Defense X are categorized by rarity, which determines how many substats they can roll and the maximum level you can upgrade them to. Higher rarities are exponentially more powerful, making them worth the grind.

Rarity	Max Substats	Max Level	Notes
Rare	1	6	Basic relics for early-game use
Epic	3	9	Decent mid-game options
Legendary	4	12	Strong relics for late-game
Mythic	5	15	Highest standard rarity
Raid	5	15	Uses star system and tag bonuses

As you can see, Mythic and Raid relics are the endgame targets. They offer the most substat slots and the highest level cap, which translates directly into superior stats. Raid relics stand apart because they also feature a star system and tag bonuses, adding another layer of customization.

Relic Types and Main Stats

Relics come in three equipment slots: Top, Bottom, and Accessory. Each slot focuses on different stat categories. Equipping a Top and Bottom relic from the same family activates the set bonus, while Accessories provide unique special effects.

Type	Description
Top	Offensive-focused stats
Bottom	Range, cooldown, damage, and crit stats
Accessory	Special effects and unique bonuses

The main stat you get on a relic depends on its type. Here are the values at level 15:

Type	Main Stat	Value
Top	Damage	+60%
Top	Crit Damage	+120%
Top	DoT Damage	+75%
Top	Hyper Armor Damage	+100%
Bottom	Range	+30%
Bottom	Cooldown	-22.5%
Bottom	Damage	+60%
Bottom	Crit Rate	+37.5%
Accessory	Elemental Damage	+30%
Accessory	Buff Potency	+45%

Choosing the right main stat for your unit's role is critical. A damage dealer will benefit more from a Top relic with Crit Damage, while a support unit might prefer Buff Potency on an Accessory.

Raid Relic Stars and Tag Bonuses

Raid relics are the only relics that use a star system. When you obtain a Raid relic, it rolls with 1, 2, or 3 stars. The star count determines how much stronger the relic is compared to a Mythic baseline.

Stars	Chance	Bonus
1 Star	80%	Same stats as Mythic relics
2 Stars	15%	+2.5% stats above Mythic relic stats
3 Stars	5%	+5% stats above Mythic relic stats

Beyond raw stats, Raid relics can also have tag bonuses. For example, a relic with the Peroxide tag will grant additional set buffs if equipped on a unit that also has the Peroxide tag. This system encourages you to build synergistic teams around specific tags.

Best Relic Sets and Their Effects

The real power of relics shines when you combine them into sets. Each set offers unique bonuses that can dramatically change how a unit performs. Below are some of the most impactful sets available in Universal Tower Defense X.

Sun God Set

Bonus Type	Effect
Top + Bottom Set Bonus	+5% Damage, +10% Light Damage, +10% Water Damage, +10% Ice Damage
Accessory Set Bonus	Every 6 attacks, gain a damage buff equal to your range for 7 seconds (1 Range = 1% Damage)

This set is fantastic for hybrid damage dealers who benefit from multiple elemental types. The Accessory bonus scales incredibly well with high-range units.

Laughing Captain Set

Bonus Type	Effect
Top + Bottom Set Bonus	+5% Damage, -5% Cooldown, +5% Range
Accessory Set Bonus	Active Ability Cooldown -5%

A well-rounded set that boosts damage, cooldown reduction, and range. Great for ability-focused units.

Berserk Shinigami Set

Bonus Type	Effect
Top + Bottom Set Bonus	+10% Dark Damage, +10% Fire Damage, +10% Rose Damage, +10% Light Damage
Accessory Set Bonus	Every 5 hits, next attack deals +20% True Damage (ignores all resistances)

True Damage is extremely valuable against high-defense enemies. This set is a top-tier choice for units that attack rapidly.

Ex Captain Set

Bonus Type	Effect
Top + Bottom Set Bonus	+10% Crit Rate, +25% Crit Damage
Accessory Set Bonus	Refunds 5% of yen spent on upgrades

If you're building a crit-focused unit, this set is a no-brainer. The yen refund is a nice bonus for long-term grinding.

Reaper Relic Set

Bonus Type	Effect
Full Set Bonus	+2.5% Damage, +10% Range, +5% Crit Rate, +5% Crit Damage
Accessory Set Bonus	-7.5% Cooldown, +15% Range

The Reaper set also features tag perks that activate based on the unit's tag:

Tag	Bonus
Peroxide	+10% Damage, +5% Buff Potency, +8.5% Crit Damage
Reaper	+20% Hyper Armor Damage, +12.5% Armor Penetration, +15% Range
Rage	+25% Crit Damage, +10% Crit Rate, +10% Range
Hollow	+12.5% Damage, -7.5% Cooldown, +15% Range

Rebellious Shinobi Set

Bonus Type	Effect
Top + Bottom Set Bonus	On applying crowd control, gain +30% damage for 10 seconds
Accessory Set Bonus	On swapping form/mode, permanently increase damage by 5% (stacks up to 6 times)

This set excels on units that frequently apply stuns, slows, or other CC effects. The stacking damage bonus from form swaps is incredibly powerful over long fights.

Great Mage Set

Bonus Type	Effect
Top + Bottom Set Bonus	+10% Range, +20% Damage for 10 seconds on type advantage hit (cannot stack)
Accessory Set Bonus	On defeating a type-advantage enemy, gain +40% Damage and -20% Cooldown for 10 seconds (10-second cooldown)

Perfect for units that issue elemental weaknesses. The burst potential here is enormous.

How to Farm and Upgrade Relics

Farming relics in Universal Tower Defense X requires consistent effort. Here are the most reliable methods based on player experience:

Complete Raid content: Raid stages are the primary source of Raid relics, which offer the best stat potential and tag bonuses.
Farm event stages: Limited-time events often feature relic drops with boosted rates.
Upgrade strategically: Focus on leveling Mythic and Raid relics first. Rare and Epic relics are only useful as temporary temporary options.
Check substats: A relic with perfect main stats but poor substats might still be worth keeping if the set bonus is strong.

According to community reports, the drop rate for 3-star Raid relics is around 5%, so don't get discouraged if you don't see one immediately. Patience and persistence are key.

FAQ

What are Universal Tower Defense X relics?

Relics are equippable items that provide stat bonuses, set effects, and tag bonuses to your units. They are essential for optimizing unit performance in both PvE and Raid content.

How do I get Raid relics in Universal Tower Defense X?

Raid relics are obtained by completing Raid stages. They are the only relics that use a star system and can roll with tag bonuses for additional synergies.

What is the best relic set for damage dealers?

The Berserk Shinigami set is highly recommended for damage dealers due to its True Damage procs and multi-elemental bonuses. The Rebellious Shinobi set is also excellent for CC-heavy units.

Can I reroll relic substats?

Based on the available information, relic substats are not rerollable. You must farm for relics with the desired substats, making high-roll Raid relics especially valuable.