To most creatures, you appear as an average-everyday-normal glove. When prone and unmoving, creatures will believe you are a glove. In many ways, you are just a glove.

As a glove, you are immune to disease, poison, and exhaustion because you are a glove.

You have advantage on stealth and sleight of hand ability checks because you are a glove.

As a glove, without a voice or way to carry components. You are only able to use somatic spells. You may choose one somatic cantrip that you have learned because you saw some magic user do it before and you kept practicing it until you were really good at it.

At Level 1, you may chose one Level 1 Somatic-only Spell.

At Level 5, you may chose one Level 3 Somatic-only Spell.

At Level 8, you may chose one Level 5 Somatic-only Spell.

At Level 10, you may chose one Level 8 Somatic-only Spell.

If you travel with a magic using creature, they may use you as way of extending the range of their spells that require somatic movements. As long they have the necessary components, are able to verbalize, and you, the glove, are in visual/audible range of the spell caster, and they have taught you, the glove, that somatic movements necessary to cast the spell. The precise somatic movements can be learned during a short rest. 

If you, the glove, are not willing to be a magical range extender, you may chose not to cast the spell.

As a glove, you can only carry items that can be worn on the fingers or wrists. (Ex. rings and bracelets)

Nothing may enter the glove. Your soul is in there. A strong magical field prevents anything from passing through the opening. The inside of the glove appears empty.