Scarlet Witch's powers have developed almost constantly over the years. Originally her hex bursts caused disaster and calamity wherever they struck. After some light mystical training with Agatha Harkness, Wanda learned how to focus on probabilities and hone her hexes to specific outcomes. More recently, Wanda has learned that her power is the manipulation of natural magic, which she now can use for self-levitation, limited control of the elements, detection of magic and unnatural phenomenon(like mind control), and focus her power to negate said phenomenon. From uncannyxmen.net
well... I think that powers of Scarlett Witch and and Jean are not fair... Because:
Jean has also ability to see others minds (like Proffesor X) and power to move objects with her minds are kinda the same as Avalnche's and I think that if she want to, she could heal her injuries (Wolvie's powers) and control water, control fire... in fact she has powers of everyone! Well except of Kitty's, Kurt's and few other mutants.
The same is with Scarlett Witch! It's not fair!!! I hate Jean!!!