> For the complete documentation index, see [llms.txt](https://docs.monsterra.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monsterra.io/gameplay/battlefront-mode/seasons-and-rewards/battlefront-season-1/miracle/curse-of-incompatibility.md).
# Curse of incompatibility
{% hint style="info" %}
When the effect period ends, the curse will be leveled down and continue to need time to expire for the current level.
{% endhint %}
## How it work?
|  | Curse of incompatibility increases breeding time when breeding Mongen in Breeding Den |
| :------------------------------: | ------------------------------------------------------------------------------------- |
| **Lv** | **Stat** | **Duration** | **Leveled Down Cost** |
| :----: | :------: | :----------: | :------------------------------------------------------------------: |
| 1 | 30.00% | 3,600 | 270
|
| 2 | 60.00% | 5,400s | 405 |
| 3 | 90.00% | 8,100s | 605 |
| 4 | 120.00% | 12,150s | 910 |
| 5 | 150.00% | 18,225s | 1365 |
| 6 | 180.00% | 27,338s | 2050 |
| 7 | 210.00% | 41,007s | 3075 |
| 8 | 240.00% | 61,510s | 4610 |
| 9 | 270.00% | 92,265s | 6915 |
| 10 | 300.00% | 138,397s | 10375 |