Information on Dreadtooth, its connections to Dreadful Entity in the TFB secret cave area, and the Dread Slayer title.
The mystery of the secret cave in 16m Hardmode TFB and its connection to Dreadtooth was revealed today by members of the Carnage Gaming raid team.
Dreadtooth killed at 10 stacks (requires a 24 member raid team) drops
Dreadful Amulet. This Dreadful Amulet can be brought into the secret cave area of 16m hardmode Terror from Beyond (before the second boss, near a bridge) to spawn the secret boss known as Dreadful Entity.
Killing Dreadtooth at 10 stacks also grant players the title: The Resurgent
The Amulet has a 24 hr cooldown (meaning the secret boss can be summoned only once 24 hrs) but you can trade it (with the 2hr limit once looted) to reset the timer
Dreadful Entity, once killed drops the
Dreadful Orb and reward players with the title Dread Slayer and a codex entry with the same name. It is currently unknown what Dreadful Orb is used for.
The orb turns you what looks like a Hypergate Anomaly for 15 seconds and can be used on anyone i.e. friendly players or mobs