sounds good, but if you need 10 XP to get to level 1, do you start on level 0?
we could also use a shop, where you use money you've gotten by defeating enemies and other players:
potion: +5 health mid-battle, 10 silver pieces
super potion: +15 health mid-battle, 25 silver pieces, req level 3.
hyper potion: +30 health mid-battle, 45 silver pieces, req level 5.
cookie: adds extra xp if you use it in a battle. it will be wasted if you lose the battle, though. 10 silver pieces
Fireball Scroll: adds Fireball, a magic ability. has an AV of 5, which increases with level, but can only be used once. 75 silver pieces.