Thieving

You can steal from any creature you see. You can steal, any weapon, magic item, and at level 9 you can learn one of their spells, proficiencies, feats, or even their body features to completely transform into. For spells and more, the person has to have seen the spell used before to learn it and steal it, the creature LOSES that spell or feat or whatever. The item is also stolen without the creature noticing, so no need to make any saving throws, but the spell caster needs to roll a 10 to steal the item, and a natural 20 or 25 with modifiers to steal a spell and the other stuff. If they fail they don’t get anything.