Universal Tower Defense X: Traits & Relics Guide
Complete trait tier list (Ruler, Eternal, Fission, Astral...) and all 5 relic sets explained. Know what to reroll and what to keep.
Quick Summary
Complete ranking of all traits from S-Rank (Ruler 3.0x, Eternal 2.5x) to D-Rank (Basic 1.0x), plus detailed breakdowns of all 5 relic sets (Bio-Android, Hollow, Akatsuki, Marine, Pirate) with optimal unit pairings. Includes a "keep or reroll" decision framework — knowing when to stop rerolling saves thousands of Trait Reroll tokens.
Trait Tier List
Relic Sets
+50% Crit Damage, +25% Damage
Best for: DPS units lacking crit damage
+30% Slow Effect, +20% Time Stop
Best for: Crowd-control / Support units
+25% CDR, +20% Range, +15% Damage
Best for: King Sailor, long-range DPS
Disables crit, +60% Raw Damage
Best for: Units with high base damage, no crit
+40% DoT Damage, +20% Duration
Best for: DoT-focused units (with Fission/Astral)
How Traits Transform Your Units
Traits are the single biggest power swing in UTDX. A unit with the right S-rank trait can deal 3x more damage than the same unit with a C-rank trait. Understanding which trait to use on which unit is the difference between clearing content easily and hitting walls.
Best for: Your single strongest carry. Ruler provides 3.0x damage but limits to 1 placement. Perfect for Story Mode and short stages where you want to delete enemies fast.
Best for: Infinite Mode and long fights. Eternal starts at 1.6x but scales over time. After wave 20+, it surpasses Ruler in total damage output. Essential for Infinite pushers.
Best for: Team synergy. Fission applies Radiation DoT, Astral enables stacking. Together they create exponential damage growth. Requires two units but dominates late-game.
Best Trait + Relic Combinations
| Strategy | Trait | Relic Set | Best For | Power Rating |
|---|---|---|---|---|
| Max Burst | Ruler | Sorcerer Hunter | Story / Legend | ★★★★★ |
| Crit Build | Ruler | Bio-Android | Boss Fights | ★★★★★ |
| Infinite Scale | Eternal | Reaper Set | Infinite Mode | ★★★★☆ |
| DoT Stack | Fission | Reanimated | Wave 50+ | ★★★★☆ |
| Support Boost | Astral | Gojo Set | Team Support | ★★★☆☆ |
Complete UTDX Trait and Relic Guide
The trait system in Universal Tower Defense X (UTDX) is one of the deepest and most impactful mechanics in the game. Every unit can equip one trait, which modifies its core stats and combat behavior. Traits are ranked from C (common, minimal effect) to S (rare, game-changing). The three S-rank traits — Ruler, Eternal, and Fission — each enable fundamentally different playstyles. Understanding which trait to pair with which unit and relic set is essential for pushing endgame content like Infinite Mode wave 100+ and Virtual Realm Floor 30+.
Relic sets add another layer of build customization. Each set provides a unique bonus when you equip the required number of pieces. The current meta favors Sorcerer Hunter for raw damage builds, Bio-Android for crit-based burst strategies, and Reaper Set for cooldown-focused scaling builds. The interaction between traits and relics is multiplicative — meaning a 3.0x Ruler trait combined with a 1.6x Sorcerer Hunter bonus yields 4.8x total damage, not 4.6x. This compounding effect makes optimal trait-relic pairing one of the highest-impact optimizations you can make in UTDX.
Trait & Relic FAQ
📊 Data Source & Methodology
Unit stats, trait multipliers, and gacha rates sourced from in-game data and developer patch notes. DPS calculations verified against in-game damage testing.
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