Wan Sam Phan Tueng

Ritual purpose

Primary occult purpose: คงกระพันชาตรี against weapons, especially edged weapons — though the effect is explicitly time-limited ("ชั่วเบา"/until urination) and limited to sharp objects, not blunt clubs.

Botanical

Best biomedical identity: Dioscorea bulbifera L. (air potato/aerial yam), with regional name ว่านพระฉิม/มันขมิ้น. Occult/vendor sources sometimes describe a different Curcuma-like "หัวใหญ่" plant under the same name — unstable across both identities.

Origin / legend

No real origin legend; sources give botanical/medicinal detail or magical-property claims only.

Consecration method (ปลุกเสก)

Plant in lunar month 5 or 6, harvest ("กู้ว่าน") in month 12. Watering water should be empowered with "นะโมพุทธายะ".

Katha (คาถา)

• นะโมพุทธายะ

  na mo phut tha ya

  Homage to the Buddha — used to consecrate watering water.

Application

Eat/ingest the tuber or carry it on the body for invulnerability; also sliced thin and steeped in liquor for medicinal use (kidney/back-ache complaints).

Taboos / restrictions (ข้อห้าม)

• Invulnerability lasts only until urination, and only against edged/sharp weapons. The tuber must be soaked/cooked to remove toxins before eating — raw ingestion is not safe.

Sources

• MedThai, "ว่านพระฉิม"
• SaimHerbal Blogspot
• Samumpri-Thai Blogspot, "สรรพคุณ ว่านสามพันตึง"