The Spider Charm is an artifact in Remixed Pixel Dungeon with mysterious properties. The item has evolved over time, gaining additional functionality.

The Spider Charm originally allowed the hero to enter the Spider Nest sub-location. This functionality has been superseded, as players can now access the Spider Nest without the charm.

The Spider Charm now allows the player to summon a friendly spider at the cost of some health. This summoned spider serves as a temporary ally in combat.

According to the changelog, the Spider Charm was updated with a new sprite and now drops from the Spider Queen boss, suggesting the item has evolved in both appearance and functionality over time.

The Spider Charm provides tactical advantages through its summoning ability, creating an additional combatant to assist in battles. However, the health cost requires careful timing of its use.