Marnie’s Prismatic Chicken adds a late-game animal to Stardew Valley: a shimmering hen that lays prismatic eggs and, on rare days, a Prismatic Shard instead.

Features

Progression-gated unlock: Buyable from Marnie only after Farming 10 and 10 hearts with Marnie (both configurable). A flavor mail arrives when you qualify.
Rare shard drops: ~2% chance per production cycle (base) or 5% with Deluxe Coop; otherwise lays prismatic eggs.
Balanced pacing: 7 days to mature, then produces every 2 days. Eggs are priced close to vanilla (configurable).
Config options (GMCM-ready): adjust Farming/Heart requirements, purchase/sell price, and prices for Prismatic Egg & Large Prismatic Egg.
i18n support: all names, descriptions, and mail text are fully localizable.
Simple install: Content Patcher pack.
Optional: Generic Mod Config Menu for in-game tweaking.

Notes

The shard drop is in addition to normal egg production and is intentionally rare to keep late-game balance intact.

Art by arkadyaa

[CP] Marnie's Prismatic Chicken