Cosmo
Hero Skill
Summons 1 Twilight Dome on a random location. Enemies within the Twilight Dome are Paralyzed and receive DMG equal to 300% of Cosmo's ATK every second. Twilight Dome lasts 5s. When Twilight Dome is in play, this Hero gains immunity to Freeze, Petrify, and Entangle. (Cooldown: 7s. When Hero has at least 50% of his HP, he gains 200% ATK every 4s. When Hero has less than 50% of his HP, he takes 85% less DMG every 4s. Each ATK increase and DMG reduction lasts for 4s.)
Best Build
Recommended Attributes
Cosmo build analysis
Cosmo is a legendary crowd control hero. Compared with the other 17 legendary crowd control heroes in the database, Cosmo leans durable, with base HP near the top of its class while ATK sits lower. Among top players, the most settled part of the build is trait (Dodge, 36.9%) and the least settled is pet (Staredown (M), only 4.0%), so the pet slot is where you have the most freedom to adapt.
How settled is each slot?
The pick rate of the most popular option shows how much top players agree. Cosmo's top talent, Sacred Light, is picked 21.9% of the time, which is about the same as the typical hero.
| Slot | Top pick | Runner-up | Verdict |
|---|---|---|---|
| Talent | Sacred Light (21.9%) | Revitalize (12.3%) | contested |
| Insignia | Empower Insignia (33.3%) | Revitalize Insignia (24.4%) | clear favourite |
| Square Insignia | Winged Rebirth Insignia (14.9%) | Inspire Insignia (13.9%) | no consensus |
| Equipment | Holy Conviction (18.2%) | Malaise (11.8%) | contested |
| Trait | Dodge (36.9%) | Accuracy (26.0%) | clear favourite |
| Pet | Staredown (M) (4.0%) | Celestial Ward (3.5%) | no consensus |
Near-universal is 50% or more, clear favourite 30–50%, contested 15–30%, no consensus under 15%. When a slot is contested, the runner-up is usually a reasonable substitute if you don't own the top pick.
Stats compared with other legendary crowd control heroes
| Stat | Cosmo | Peer median | Rank vs peers | Rank overall |
|---|---|---|---|---|
| Base ATK | 232 | 220 | 6 / 18 | 126 / 208 |
| Base HP | 3,700 | 2,525 | 3 / 18 | 124 / 208 |
| ATK growth per level | 14 | 13 | 4 / 18 | 118 / 208 |
| HP growth per level | 260 | 120 | 1 / 18 | 104 / 208 |
| Attack interval (lower is faster) | 1,000 ms | 1,000 | 3 / 18 | 19 / 208 |
| Move speed | 275 | 178 | 2 / 18 | 120 / 208 |
Across all 208 heroes of every rarity, base ATK ranks 126th of 208 and base HP ranks 124th of 208. Its skill has a 7s cooldown.
Where Cosmo is a top user
These are options where Cosmo is one of the five heroes most likely to run them. If you're deciding which hero should get a scarce item, these are strong candidates for Cosmo.
- Wicked Armor (Talent): #2 of 15 heroes that use it, picked on 11.1% of Cosmo builds
- Malaise (Equipment): #3 of 171 heroes that use it, picked on 11.8% of Cosmo builds
Heroes with similar builds
21 other heroes share Cosmo's core pairing of Sacred Light + Empower Insignia: Ripper, Grief Harpist, Jewellee, Lightchaser, Soul Seeker, Abyss Apostle, Electroranger, Michael, and 13 more. If you're rebuilding one of them, the same talent and insignia usually carry over.
Looking at every slot, not just talent and insignia, these heroes' builds overlap most with Cosmo's:
- Athene (legendary, support): overlap score 232
- Boreal Fox (legendary, multiclass): overlap score 225
- Ripper (legendary, offensive): overlap score 216, same top talent (Sacred Light)
- Wallawalla (legendary, support): overlap score 212, same top talent (Sacred Light)
Overlap score adds up the shared pick rate across all six slots. 0 means nothing in common, and 600 would mean identical builds.
Data source: base stats, skill text and pick rates come from IGG's official Castle Clash hero data, which reports what top players equip. The rankings, consensus ratings and similarity scores above are calculated by CastleClash Builds. See the methodology for details.