Question: In my story, there is a character that is capable of using magic or an ability that allows them to "teleport" as long as they are in contact with the ground or the area that they want to use it on with at least one hand.

For example, in the middle of a circular arena 100m in diameter, as long as they are touching the floor (with a hand), they can teleport anywhere as long as it is "connected" or still physically part of the arena (which means that any floating rocks won't count, and they wouldn't be able to use it to get away from the arena in the case that it is floating).

What limitations can be set on it to avoid being too powerful, and with limitations in mind (or not), what would be the best type of magic/ability to use with it? (disregarding earth magic/manipulation)

My thoughts were to limit it to 75-100m and only usable every second or two, and to be used with wind magic mainly (if mist or fog can be made using wind magic).

Answer: 
**Make her as powerful as you imagine she is.**

Because that is where the awesome is! You worry your character will be overpowered which means you can imagine her doing overpowered stuff. You worry she will be able to do stuff no-one can counter. And I think you like it. **Have her do that stuff!** Please! Have her totally thrash her opponents with her overpowered skills! That is what I want to read.

But then how to beat her? That will be more fun to figure out than how to limit her. You do not need to figure out how to limit the character you can imagine. You need to imagine other characters on her level. Figure out how her opponents can best her or at least equal her. Or team up with her? Woo! Yeah!
Please be much more imaginative. Either explain or drop any difference between “using magic” and how else they might "teleport”.

Explain how a “hand” matters, rather than a foot or shoulder, knee or elbow.

A “circular arena…” is one thing. A “circular area…”; even “a circle…” very different. You might not care.

Your “floating” might have a use, or not.

If it is written that limitations should be set to avoid anything being too powerful, you might be able to Post where or when.

To disregard earth magic/manipulation when your Question is solely about “contact-based teleportation”, as explained by you as being in contact with the earth, seems like a contradiction in terms.

Limit what you want to 75-100m, usable only every second or two and with wind magic mainly.

Specify whether you’re writing about one second or two.

Name anyone who in a crisis, didn’t see all the difference in the world between one second and two.