# Blessing of Dumathoin Your eyes become keen enough to pick out hidden secrets. You gain [darkvision](/Rules/Source/senses.md#Darkvision). If you already had [darkvision](/Rules/Source/senses.md#Darkvision), you can see in color in the dark. In addition, you can use an action to gain [truesight](/Rules/Source/senses.md#Truesight) for 1 minute. Once you gain [truesight](/Rules/Source/senses.md#Truesight) in this way, you can't do so again until you finish a long rest. *Source: Phandelver and Below: The Shattered Obelisk p. 118*