The mythic sheep cave is one of mythic caves in mythic nexus.
you can get to this cave by traveling to south gate then heading slighty east. This cave is above the monkey cave. You can also access this cave by going to east gate then heading west and south. The cave will be near the middle of mythic nexus.
Save requirements:
Sheep 1:
Level 88
Sheep 2
Vita: 140,000 /
Mana: 70,000
Sheep 3:
Vita: 340,000/
Mana 170,000