General Contracts
Identity Devil
Psychometry (Can see people's names and life spans)
Eye Devil
Enhanced Senses (With the Shinigami eyes her eyesight is stated to reach 3.6)
limited Disease Manipulation (Can develop any specified disease into the victim if given the right time of death for it to progress), . Using the Death Note: Death Manipulation (As long as Misa knows a person's name and face, she can kill them by writing their name in the Death Note, causing a heart attack by default), Mind Manipulation (Can control people's actions against their will before death, and cause suicide), Fate Manipulation (Can control when and how people die within 23 days, and can cause "accidental" deaths through seeming coincidence), limited Probability Manipulation (Can cause events to happen as long as it's logically possible)
The Death Note is a item created though multiple interloven