The Darkness Cluster is a fairly rare resource in Zelda Tears of the Kingdom if you don’t know where to look! However, you will need it very quickly to explore the Depths.
What are the clusters of darkness for?
This resource has two main uses. First, you will need dozens of them to be able to upgrade your Dark Outfit. which allows you to resist the poison of the miasma. In short, the complete set of darkness will allow you to explore the Depths without fear. And if you don’t have the outfit, the second use of the cluster of darkness is precisely to prepare anti-miasma recipes!
Where to find clusters of darkness?
This material is only obtained by defeating certain monsters. You can target those in the Depths, but it is best to fight the Miasma Hands (which sometimes appear on the Surface) thanks to some flower bombs and the Ghost of Ganon which will be summoned right after.
The other easy way to get them is to buy them from Genie Statues for 10 Spirits each.