Lunepigs

1 in 10 pigs spawn as pending_lunepigs — identical to normal pigs in appearance, sounds, and behavior. Fully undetectable in survival mode until something sets them off.

There are two triggers: a full moon, or Pigstep playing in a nearby jukebox (with a 3 day cooldown). Once triggered, their eyes glow red, their fur shimmers purple at light level 2, and they turn hostile toward players only, lasting until dawn. The Creator (Music Box) turns them back — with a 5 day cooldown.

Every pig has a 1 in 7 chance each day of either gaining or losing the pending_lunepig status. Switch it on or off with the “Lunepig Mutations” world setting.

Detection:

Lune pig Catalyst — Mundane Potion + Lunepig Membrane + Gunpowder. Splash it on a pig: 76% accurate, though both false positives and false negatives can happen. Restores health to Illagers, Piglins, and Piglin Brutes. Deals damage to players and Husks. Membrane is dropped by transformed Lunepigs.

Lune pig Tonic — Mundane Potion + Piglin Water (Piglin Brute Essence + Fermented Spider Eye). Drink it to gain purple vision near Lunepigs for 5 mins — 29% accurate, Absorption for 2min, Wither for 1min.

Breeding: pig + pig = 99/1 / pig + Lunepig = 49/51 / Lunepig + Lunepig = 99/1