Stella Code is one of the additions in the '25 WINTER update.

Here is a brief introduction to Stella Code:

“Five constellations were scattered by a Sol Erda surge, and bringing them together created this power.” This ability is exclusive to MapleStory M.

Stella Code consists of 2 parts:

1) The active skill, “Constella Core”

2) The passive skill, “Star Chorus”

1. Constella Core

Constella Core is the active skill.

Currently, only the active skill is available, but buff skills also appear to be planned for a future update.

You receive 1 “세리온”, the material needed to upgrade Constella Core, for every 1,000 “세리온 플레어” you collect.

Using 세리온 to upgrade the skill increases its damage with each level.

Every 10 levels, additional attributes improve, including Ignore DEF and the number of hits, rather than just attack power.

2. Star Chorus

“Star Chorus” is the passive skill.

It increases stats such as Max Damage, Physical or Magic Damage, Attack, and Final Damage.

These stats are upgraded using “세리온”.

The large stars, called Higher Chorus, have stats you can reroll.

The small stars, called Normal Chorus, have fixed stats that cannot be rerolled.

In summary:

The Stella Code system was introduced in the '25 winter update.

It includes an active skill and a passive skill, which you can level up using “세리온”.

*To use Stella Code, you must complete the related quest, “<Authentic> Stella Code,” which becomes available at level 250.

**Currently, you can obtain 세리온 by defeating weekly/monthly bosses.

For MapleStory M guides, visit the blog below.

https://blog.naver.com/maple-mobile