> For the complete documentation index, see [llms.txt](https://featherfrogs.gitbook.io/featherfrogs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://featherfrogs.gitbook.io/featherfrogs/feather-frog-nfts/what-are-ff-pfps/d-season-delta.md).

# δ┊Season Delta

<figure><img src="/files/dlm2XDWaqGdsESvmtpkJ" alt=""><figcaption></figcaption></figure>

#### **Season 4: Royal Bloodlines – Kings & Queens Enter the Game**

To evolve to **Level 4**, you’ll need two matching Level 3 Frogs. This season is where things start getting serious — not just because the Frogs are getting rarer, but because the **royalty arrives**.

Each Kingdom will see the rise of its own **King and Queen**, for a total of **9 royal pairs**. These NFTs will be **airdropped to holders of Level 4 Frogs** during the season. They won’t just be for show — they’ll play a powerful role in the final evolution.

And as always, **multiple Level-Up events** will take place throughout the season.

![A Level 4 : Male Aqua Artisan  with Blue Sapphire Birthstone](/files/EXL57wT4JMoyvFfsZhLC) ![Level 4 : Female Aqua Artisan  with Blue Sapphire Birthstone](/files/r8Q3mqvHaTFBIrsyw7nG)