Cultivation Spren

It is believed that spren were created by the splintering of Honor and Cultivation, divine shards from the power of creation. They represent aspects of nature, emotions, sensations, etc.  On the material plane, they cannot be seen unless there is a reason for them to be seen. When they do appear, they are seen as ethereal patterns of light that resembles the type of spren they are. Their physical bodies reside in the cognitive plane and cannot be seen without true sight or by entering the cognitive plane. 

Spren fall into two major categories, basic or radiant spren. Basic spren are mindless and react to the things in the material plane. Hungerspren will appear around a creature that is hungry, or flamespren around the flames of a fire. Radiant spren sentient that normally live on the cognitive plane. They will enter the material plane if they are attracted to it based on the aspect that the spren represents. Honorspren are attracted to honorable action as perceived by humans; Cryptics are attracted to incomplete truths as perceived by humans, etc.. They use such attractions to find humans who might be worthy hosts. Radiant spren are those that can form the Nahel bond with a creature and become a knights radiant.

In the Astral plane, cultivationspren take a humanoid form, one of tightly interwoven vines that imitate musculature. In some cases, these vines have a subtle texture reminiscent of rough cloth, but cultivationspren don’t form clothing as part of their essence. Their eyes and teeth are translucent crystal; their hands are also crystalline, though with the flexibility and mobility of flesh. On the crown of their heads and throughout their vine-like hair, most cultivationspren sport additional crystal growths.

While in the Material Plane, a cultivationspren appears as a small network of vines speckled with smooth quartz. They “grow” rapidly in the direction of their movement, their trail turning crystalline then dissipating into dust. When conversing, they often curl and contort their form to resemble a face, though they needn’t do so to speak

The names of cultivationspren are often inspired by natural phenomena, especially plant life, though others use ancient naming conventions long-forgotten to Roshar’s physical denizens. Fitting names include Althaine, Floriana, Glykis, Hedera, Hortus, Phyllium, Pollene, Typh, Verdo, and Vlanala.

A cultivationspren can make themself visible and audible to whomever they wish; otherwise, cultivationspren in the Physical Realm are generally invisible and inaudible to physical entities who don’t have a specific ability to perceive spren. However, when cultivationspren move, their crystalline vines are temporarily visible before collapsing to dust, making stealthy movement difficult. Physical Interaction.

Cultivationspren are nearly incorporeal in the Physical Realm. They can’t pass through objects, but they’re made of thin vines, enabling them to pass through gaps with a diameter of 1 inch.