I know I can make keys in my Blacksmithing.
1. Can I unlock Chests with keys, even though I am a Warrior?
2. If I use a key and it doesn't work, can I re-use it? Examples: If I use a key that is too weak for the type of lock, then does the key disappear?
3. If I use the key and it works does it disappear (one use per key)? Kinda the same as #2.