Undead Herald

Undead Herald is a passive NPC that spawns naturally across almost all Advent of Ascension dimensions, the Overworld, and the Nether.

Behavior
Like all other roaming NPCs, Undead Heralds can despawn, and roam freely throughout the world. Their despawn can be prevented by naming them using a name tag.

Trades
Undead Heralds are unique in that their available trades vary depending on which dimension the herald is from. Heralds can be transported across dimensions,excluding Nowhere changing their available trades.

All trades are always fully available by default, and don't require any additional trades to unlock more.