From HoNwiki

Scarab
Cost
325
Stats
+50% Mana Regeneration
Modifier
None
Location
Relics
Dota Counterpart
Sobi Mask

Component of

This item is used as a component of the following items:

• Stormspirit
• Great Arcana
• Ring of the Teacher

The More You Know

Also available at the Outpost.