Spellblazer

http://www.kongregate.com/games/rapaxus/spellblazer

If you like Bejeweled, you will love this game.
It takes the simple mechanics of Bejeweled and wraps them as a battle system into a fantasy flash game.
Swap the different symbols to get three in a row and trigger a spell, that either hurts your opponent or heals yourself. When you trigger symbols your opponent uses for attack, you will get a defense bonus against his next attack.

Graphics and story are also great.
I just hope there will be a second part of this game.