Solar Flare Dragon's effect only works once right? Or does it work over and over again?

Over and over, as long as it remains face-up on the field.

Oh really? Because it's effect states that: This card inflicts 500 points of damage to your opponent's Life Points during the end phase of your turn. I didn't know if the effect meant it just inflicts once or over and over again. Ok, thanks.

By saying the end phase of your turn, it is simply stating when the effect will activate. It doesn't say "during the turn this card was summoned" or any likeness to it, so you're okay jack.

Alright, thanks a lot man. I am trying to build a really good burn deck for my little sister so I just needed to clear that up. Thanks again.