How to Get Solron in Catch a Monster: Gildron Evolution Guide (2026)
Complete guide to evolving Gildron into Solron in Catch a Monster. Exact materials list, how to farm 21 Refined Ground Gems from Aurobull, and realistic cost expectations.

How to Get Solron in Catch a Monster (2026)
Solron is the evolved form of Gildron, introduced in the February 20, 2026 Valentine Update. It has quickly become one of the most-pursued endgame evolutions in the game due to its powerful stats. This guide covers exactly how to get Solron, how to farm the materials efficiently, and what to expect from the process.
What is Solron?
Solron is a Ground/Fire evolution that represents a major power upgrade over Gildron. As one of the newer evolutions added in the Valentine update, it slots into mid-to-high-tier endgame content.
Evolution path: Gildron → Solron (one-step evolution using the Refinement/Evolution system)
Solron Evolution Materials
To evolve Gildron into Solron, you need:
| Material | Quantity |
|---|---|
| :--- | :--- |
| Gildron (any rank) | 1x |
| Refined Ground Gems | 21x |
| Refined Fire Gem | 1x |
| Refined Water Gem | 1x |
| Refined Ice Gem | 1x |
| Refined Plant Gem | 1x |
| Refined Dark Gem | 1x |
Total gems: 26x Refined Gems (21 Ground + 1 each of the remaining 5 types)
The community shorthand is: "21 ground + 1 each of everything else."
Is Solron a Guaranteed Evolution?
Yes — Solron is a guaranteed evolution, unlike secret evolutions (e.g., Eclipse Knight, which has RNG success). If you have all materials, the evolution will succeed every time.
This makes Solron fundamentally different from Eclipse Knight: No failed attempts No wasted materials 100% success when you meet the requirements
The only real challenge is farming 21 Refined Ground Gems as the bottleneck.
How to Get Gildron
Gildron was originally available from Gildron Eggs during the Valentine 2026 event. If the event has ended, check the following:
Current events for Gildron Egg opportunities Craft Store or future event rotations Ask in the Discord if Gildron is available in any permanent content
Note: If Gildron Eggs are no longer available, watch patch notes for Gildron's permanent spawn location.
How to Farm Refined Ground Gems (The Main Bottleneck)
Primary Source: Defeat the Aurobull boss on Dunevil Isle
Details: Recommended level: 55–65 Aurobull respawn timer: ~15 minutes Drop rate: 1–3 Refined Ground Gems per kill (average ~2) Server-hoppers report clearing 5–8 servers per hour for maximum output
Step-by-step Aurobull farming:
- Fly or travel to Dunevil Isle
- Locate and defeat the Aurobull boss
- Collect all ground gem drops
- Open the server list, switch to a new public server
- Defeat the Aurobull in the new server immediately (it may still be alive if no one has engaged it)
- Repeat
Expected grind time for 21 Ground Gems: Casual (1–2 servers): 3–5 hours Efficient (server-hopping): 1–2 hours With drop luck: 45–60 minutes is possible
How to Farm the Supplement Gems (1x each)
The five supplement gems (Fire, Water, Ice, Plant, Dark) are each needed in a quantity of only 1 Refined Gem. These are significantly faster to obtain than the 21 Ground gems:
| Gem | Source Boss | Island |
|---|---|---|
| :--- | :--- | :--- |
| Fire | Blazelord | Volcano Island |
| Water | Tidevex | Tideland Island |
| Ice | Frostwyrm / Glaciron | Spirit Grove / Frost Isle |
| Plant | Sproutusk | Forest Island |
| Dark | ShadeKnight | Neverland Island |
Each of these needs only 1 Refined Gem total. One or two boss kills of each type should be sufficient. If a drop does not come quickly, craft using the 3x Stardust Shards + 1x Raw Gem → 1x Refined Gem recipe (75% success).
Crafting Refined Gems as a Backup
If you cannot farm Refined Gems directly from bosses fast enough, craft them:
Recipe: 3x Stardust Shards + 1x Raw [Type] Gem = 1x Refined [Type] Gem Success rate: 75% (you will fail roughly 1 in 4 crafts)
To safely craft 21 Refined Ground Gems, prepare: ~28–30x Raw Ground Gems (accounting for ~25% failure rate) 84–90x Stardust Shards
Stardust Shards drop passively from wild monster kills across all islands. AFK farming on any island builds your Shard supply over time.
Realistic Cost Analysis
Based on community reports from the March 2026 period:
| Scenario | Time Investment |
|---|---|
| :--- | :--- |
| Efficient server-hopper | 1.5–2 hours total |
| Casual player (no hopping) | 4–6 hours over days |
| Worst reported case | ~8 hours (bad drop luck) |
Several players in the community reported spending over 800 Refined Ground Gems across 40+ evolution attempts for Gildron's earlier secret evolution (Solron was not guaranteed in early versions). The current system is a guaranteed evolution, so 26 gems is the absolute cost.
After Getting Solron: Next Steps
Once you have Solron:
- Rank it up: Fuse 5 Solron to increase from its current rank
- Check EM%: If Solron has an EM% after evolution, consider Chaos Potions if the value is below 190%
- Equip Gear: Roll in the Craft Store for gear suited to Solron's element
For EM% and Chaos Potion strategy, see Enhancement Guide. For gem farming routes, see Gem Farming Guide.*
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