The Festive Cardinal is a BASIC pet that was obtainable from the Christmas Tree Egg, with a 33% base chance of hatching. It was only available during the Christmas Event 2021.
The latest Pet Simulator X value list for Domortuus Astra can be found below:
💎 82,500 (82.5k)
💎 239,000 (239k)
💎 733,000 (733k)
💎 2,300,000 (2.3m)