How does an item become soulbound?
An item becomes soulbound by one of two means. Either the item became soulbound the instant it was acquired by the player, whether created by that player or taken from a slain boss, or it became soulbound when the player actually equipped the item after acquiring it. These two methods are reflected in the item’s tooltip, which indicates whether the item either “binds when picked up” or “binds when equipped.” If an item’s tooltip is lacking either of these two descriptors, it is not considered a soulbound item.
