This little game is more or less a Puzzle Quest ripoff, but it has no instructions for those of you who haven't played that, so here are some:

Buy some spells to start, and then click on a place to fight. You need to start with the level 1 guy. The rest of the game is a match-3 type game; match 3 of a color to get that element. Hover over your spells to see how much of each element they require. Matching up 3 of the other types of things will do different things as well, such as attack the enemy directly or earn you money.