Wayfinder Shard

Effect

What Wayfinder Shard does

Shows the boss portal through map fog. One per run.

Wayfinder Shard is a rare chest item that raises Portal Sight for your whole build. It lasts for the rest of the run. One copy is all it needs; extra copies do nothing.

Source

How to get Wayfinder Shard

Chest items drop from treasure chests out in the wilds — spend gold to open one, and each chest costs more than the last. Rarer items are rarer drops, so Luck (from Fortune or the Censer) makes a rare pull more likely. On every floor’s plaza the Wishing Well grants the exact item you name once per floor: the surest way to complete a build around Wayfinder Shard.

Fit

Works with every skill

Wayfinder Shard is not tied to a skill, which makes it a safe pick for any run. General items like this carry a build through the early floors while the skill-specific legendaries wait for the Wishing Well.