To win the young mage competition, you must have some mana (70 at least) spend your points in basic damage-6 points in this, many in 1 one of the base attack spells (high or low- for example 9 or 10) and to win some advantage, if you want, you can have addictional low or high attacks.
This note is for starters: to begin with, poison water is easy to control and it's deadly when you use poisonous wave and paralyze (you use firstly poisonous wave and then the other) and it has also trigger poison-when opponents have 40 poison, you can kill them with this spell. If you like attack and it's also easy to control, then you must take chaos desert- they can have extra bolts, and cummulative damage, which makes them awesome magicians. Ice land is for those who like to play with their opponents (you can regenerate-life and mana and you may make them lose their defensive bolts. Also it has a good defense spell-check in clan spells). I have completed these three classes in different ways and managed to be great mage with these classes easily: good (If you have very high reputation you may be god-awesome detail) neutral and bad-in this one I was so bad that I was Satan!