Ryujin is a dragon god in Japanese mythology and Shintoism, and is sometimes referred to as the god of the sea. The word Ryujin literally means "dragon god" in Japanese, and he is believed to be the ruler of all dragons.

According to mythology, Ryujin lives in a palace at the bottom of the sea, and is said to control the tides and currents of the ocean. He is also believed to be a protector of fishermen and sailors.

In Shintoism, Ryujin is often associated with water and is considered a kami, or spirit, of the natural world. Many people offer prayers and offerings to Ryujin in the hopes of receiving protection during sea voyages, or for good fortune in matters related to water.

In terms of using Ryujin in witchcraft, some people may choose to work with his energy and symbolism when doing rituals or spells related to water or the ocean. This could involve incorporating images of Ryujin into their altar, using specific herbs or stones associated with water or sea magic, or reciting incantations or prayers to invoke his energy.

Overall, Ryujin is a powerful and important figure in Japanese mythology and Shintoism, and his energy and symbolism can be used in a variety of ways in witchcraft and spiritual practices related to water and the natural world. 

Ryujin is a kami in the Shinto religion of Japan, and is believed to be the god of the sea and dragons. In Japanese mythology, Ryujin is considered to be one of the most powerful and revered gods, and is associated with the creation of Japan.

Offerings, Incantations, Divinations, Stones, and Herbs

In Shinto, offerings and rituals are an important aspect of worship and are used to show respect and gratitude to the kami. When working with Ryujin, offerings such as sea salt, seafood, and sake are commonly used. Incantations and prayers are also recited to invoke the presence of the kami and to ask for blessings and guidance.

Divination practices such as omikuji (fortune-telling paper strips) and omamori (amulets) are also commonly used in Shinto to seek guidance and protection from the kami. Stones and crystals such as aquamarine and lapis lazuli are often used for their connection to the sea and water, while herbs such as seaweed and kelp are used for their purifying and healing properties.

Items used for Witchcraft

In Shinto, there are several items that are commonly used in witchcraft practices when working with Ryujin. These include:

Tessen - a type of folding fan made of metal, which is associated with Ryujin as the god of the sea and wind.

Shachihoko - a mythical creature that is half tiger and half fish, which is often used in Japanese architecture as a decorative element, and is associated with Ryujin.

Sea shells - used for their connection to the sea and as a symbol of Ryujin's power and authority.

Shimenawa - a sacred rope made of rice straw that is used to demarcate the sacred space where the kami is believed to reside.

Physical Attributes of Ryujin

Ryujin is often depicted in Japanese art and mythology as a powerful and fearsome god with a dragon-like appearance. They are typically depicted wearing traditional Japanese clothing and jewelry, and are often associated with symbols of the sea and dragons, such as sea creatures and dragon scales.

As the god of the sea and dragons, Ryujin is often associated with symbols of power and authority, such as the sea waves and the color blue. In terms of offerings, sea salt, seafood, and sake are commonly used to honor Ryujin as the god of the sea and dragons.

Ryujin is not typically associated with any particular tattoos, but they are often depicted with dragon scales and other sea-inspired designs.

Tarot Card and Constellation Associated with Ryujin

There is no specific tarot card or constellation that is associated with Ryujin in Shinto. However, given their association with the sea and dragons, they could be associated with the Emperor tarot card and the constellation Draco, which is associated with dragons and the northern sky.

Conclusion

In conclusion, Ryujin is a powerful and revered kami in Shinto religion, who is believed to be the god of the sea and dragons. Offerings such as sea salt, seafood, and sake, as well as divination practices, stones, and herbs, are commonly used in Shinto to show respect and gratitude to the kami. When working with Ryujin, items such as tessen, shachihoko, and sea shells are often used in witchcraft practices. Ryujin is often depicted as a god with a dragon-like appearance wearing traditional Japanese clothing and jewelry, and associated with symbols of the sea and dragons. While there is no specific tarot card or constellation associated with Ryujin in Shinto, they could be associated with the Emperor tarot card and the constellation Draco, due to their association with the sea and dragons. Overall, Ryujin holds a significant place in Shinto religion and Japanese culture, and their worship and reverence continue to be a vital part of the religious and spiritual practices in Japan.