[ceremony]

Originally posted by Saber Cherry:
Leveling up always gives +1 mrl, att, def, and prec. Some levels give str, hp, and enc bonuses. There are 5 levels (and level 0).

From a post by Johan O in another thread:

Here is a list of effects of increased experience.
XP 1
Att +1
Def +1
Prec +1
Mrl +1

XP 2
Att +1
Def +1
Prec +1
Mrl +1

XP 3
Att +1
Def +1
Prec +1
Mrl +1
Str +1

XP 4
Att +1
Def +1
Prec +1
Mrl +1
Enc -1
HP +2

XP 5
Att +1
Def +1
Prec +1
Mrl +1
Str +1