Astral Beacon

The Astral Beacon can be crafted or found naturally on a pillar of Astral Monolith after the Astral Infection has generated, and is used with a Titan Heart or Starcore to summon Astrum Deus. Each summoning with a Titan Heart removes one of them from the player's inventory, while using a Starcore doesn't remove it.

It can be used anywhere, but can only be activated at night; using it at any other time will bring up the message "The god of the stars rejects your offering. The ritual can only be performed at night." When activated, two astral stars will rise up from the beacon, shortly summoning Astrum Deus.