"Rare beyond measure, the origins of this Guardian remain shrouded in mystery. Tales of the creature run rampant throughout the kingdom, but the few who have seen it claim that it takes the form of a black feline with prismatic wings."
- Description of the Xyno

The Xyno is a rare guardian only available by changing an already-existing guardian to it by means of the Xyno Transformation Crystal. This is a Special Item released in limited amounts, and can be purchased in the Cash Shop for 25 HC. The release of the Crystal is usually determined by the occurrence of a full moon, as stated in this News Post by Angel.