Halcyon Seed

Halcyon Seed is a Boss-Related Item in Risk of Rain 2.

Activating the Teleporter summons Aurelionite as an ally.

The summoned Aurelionite has 100%(+50% per stack) damage, and 100%(+100% per stack) maximum health.

It is acquired after defeating Aurelionite in the Gilded Coast. (requires confirmation, and a better image).