Rainbow Star

Hallowed Battle Standards are items that, when used, allows the spawning of Hallowed Altars and Light Crawlers. They are dropped by Enchanted Swords, Chaos Elementals, and Illumminant Slimes in the Underground Hallow, each with a 0.01% chance to drop it.

When used, a roar sound plays, and a message on the screen appears saying "You hear screams from the Hallow...", or if you're already in the Hallow, it will say "You hear screams from deep below..."