Radiant Spire is the final exam. Every other Mystic Trial dungeon isolates one stat system. Radiant Spire combines ALL of them — heroes, gear, pets, charms, and research — plus your own troops. This guide shows how these systems stack and where to invest for maximum impact.
The Radiant Spire opens every Sunday as the weekly capstone dungeon. Unlike all other Mystic Trial dungeons that give you standardized T10 troops, Radiant Spire uses your actual troops. This means troop tier, troop count, AND all stat systems combine for your total combat power.
What Stats Count: Everything
| System | Active? | Est. Contribution | Also Active In |
|---|---|---|---|
| Hero Base Stats | ✅ Yes | ~15-20% | Coliseum |
| Hero Gear | ✅ Yes | ~20-25% | Coliseum |
| Pets (Level + Marks + Skills) | ✅ Yes | ~10-15% | Forest of Life |
| Governor Charms | ✅ Yes | ~10-15% | Crystal Cave |
| Academy + War Academy Research | ✅ Yes | ~15-20% | Knowledge Nexus |
| Governor Equipment | ✅ Yes | ~5-10% | Radiant Spire only |
| Troop Tier / Count | ✅ Yes | ~10-15% | Radiant Spire only |
| Skins, Oasis, VIP | ✅ Yes | ~3-5% | Radiant Spire only |
Contribution percentages are estimated based on typical endgame account distribution. Actual values vary based on your specific investment spread.
Not included: Bonus Items, King's perks, Ministry positions, Alliance territory bonuses, and Outpost bonuses do NOT affect Radiant Spire battles.
Troop Tier Advantage: The Math
Radiant Spire is the ONLY Mystic Trial dungeon where troop tier matters. Higher-tier troops provide better base stats, creating a meaningful advantage:
| Troop Tier | Base ATK | Base DEF | Base HP | % vs T10 |
|---|---|---|---|---|
| T8 | Lower | Lower | Lower | ~70% |
| T9 | Moderate | Moderate | Moderate | ~85% |
| T10 | Baseline | Baseline | Baseline | 100% (baseline) |
| T11 (Truegold) | Higher | Higher | Higher | ~115-120% |
| T12+ | Significantly Higher | Significantly Higher | Significantly Higher | ~130%+ |
The % vs T10 column is what matters most — this advantage directly impacts your Radiant Spire stage ceiling.
Train before Sunday. If you're close to unlocking a new troop tier, time it so your highest-tier troops are ready before the Sunday Radiant Spire window.
Optimal Formation: 50-15-35
The 50/15/35 ratio is optimal because it mirrors the balanced approach that works across all stat systems. Your infantry benefits from research DEF, charm HP, and gear tankiness. Your archers benefit from research ATK, pet damage skills, and gear DPS stats.
┌─────────────────────────────────────┐
│ RADIANT SPIRE │
│ Recommended Formation │
├─────────────────────────────────────┤
│ │
│ ┌───────────────────────────┐ │
│ │ INFANTRY (50%) │ │
│ │ ████████████████ │ │
│ │ Front Line │ │
│ └───────────────────────────┘ │
│ │
│ ┌─────────┐ ┌────────────┐ │
│ │ CAVALRY │ │ ARCHERS │ │
│ │ (15%) │ │ (35%) │ │
│ │ ████ │ │ █████████ │ │
│ │ Flanks │ │ DPS │ │
│ └─────────┘ └────────────┘ │
│ │
└─────────────────────────────────────┘
System-by-System Optimization for Radiant Spire
Since Radiant Spire uses ALL stat systems, your goal is balanced investment. But if you're choosing where to invest specifically for Radiant Spire improvement, here's the priority:
| # | System | Why This Priority | Cross-Benefit |
|---|---|---|---|
| 1 | Hero Gear | Highest contribution (~20-25%) + benefits Coliseum | Coliseum + PvP |
| 2 | Academy Research | ~15-20% + permanent + benefits Knowledge Nexus | Knowledge Nexus + PvP |
| 3 | Troop Training | Unique to Radiant Spire — no other dungeon uses your troops | PvP + KvK |
| 4 | Hero Stars/Levels | Base stat foundation that all gear scales from | Coliseum + PvP |
| 5 | Pet Investment | ~10-15% + auto-activate in Radiant Spire + Forest of Life | Forest of Life |
| 6 | Governor Charms | ~10-15% + benefits Crystal Cave | Crystal Cave |
Enemy AI Formations
Understanding what you're fighting helps optimize your approach:
| Stage Range | AI Formation | Counter Strategy |
|---|---|---|
| 1-9 | 33/33/33 (balanced) | Standard 50/15/35 works well |
| 10+ | ~53/27/20 (infantry-heavy) | Your 50/15/35 counters by matching frontline + DPS backline |
| 30+ | Heavy infantry + cavalry (endgame AI) | May require adjusting to 55/10/35 for more tankiness |
Weekly Preparation Checklist
Your Radiant Spire performance is determined by what you do all week, not just on Sunday. Use the other Mystic Trial dungeons as preparation benchmarks:
| Day | Dungeon | Preparation Task |
|---|---|---|
| Monday | Coliseum | Test hero gear quality → upgrade weak pieces before Sunday |
| Tuesday | Coliseum | Push for max stage → identify gear ceiling |
| Wednesday | Forest of Life / Crystal Cave | Check pet and charm performance → invest taming marks/designs |
| Thursday | Forest of Life / Crystal Cave | Push for max stage → identify pet/charm ceiling |
| Friday | Knowledge Nexus | Test research effectiveness → prioritize any quick research wins |
| Saturday | Knowledge Nexus | Complete any in-progress research before Sunday |
| Sunday | Radiant Spire | Deploy full power → best gear, troops, and formation |
Radiant Spire as Account Progress Tracker
Your Radiant Spire stage is the most honest measure of overall account strength because it tests everything simultaneously. Use it as a weekly benchmark:
- Track your max stage week-over-week — it should increase as you invest in any system
- If your stage plateaus, identify which system has the lowest investment relative to others
- Compare your stage to alliance mates at similar power — if they clear higher, ask what they invested in
- Use all 5 attempts — RNG can swing results significantly
- Pet skills auto-activate (same as Forest of Life) — no need to manually trigger them
For strategies on each individual Mystic Trial dungeon, see our complete Mystic Trial Guide. Each dungeon page covers deep optimization for its specific stat system.
For long-term account progression, we strongly recommend reading our Master Academy Guide to unlock Pan and Valora's passive rewards.