Dhumavati Yantra along with its Mool Mantra is considered very effective medium to fulfil Dhumavati Sadhana.
ॐ धूं धूं धूमावती देव्यै स्वाहा॥
Om Dhum Dhum Dhumavati Devyai Svaha॥
Ashtottara Shatanamavali of Dhumavati
list of Dhumavati Mantras
information on Goddess Dhumavati
10 forms of Shakti