Chrono Egg

Chrono Egg
Chrono Egg
Group Basket
Sub Group Spring Eggs
Tradeable No
Refundable No
Limited Edition No
Items from Chrono Egg

Opening this always gives you the following:

Description
From seemingly out of time, this egg appears to phase in and out of existence.
Mousehunt Wiki page
https://mhwiki.hitgrab.com/wiki/index.php/Chrono_Egg