Here's a 3rd card that you want to stay away from. Kiddies, hide, hide! This card is no good! It is evil, and not it a good way.
Minor Goblin Official
Continuous Trap Card
You can activate this card when your opponent's Life Points are 3000 or less. Inflict 500 points of Direct Damage to your opponent's Life Points during each of his/her Standby Phases.
Well, this card sounds OK, but it's not. 500 a turn would be decent, but then there's that restriction. Your opponent must already be under 3001 LPs in order to use this card. That means that this card is useless unless you do enough damage with other cards in order to activate its effect. And while you're trying to get under that 3000 LP restriction, you'll have this card burning a hole into your stubby little fingers. If, somehow, you manage to get your opponent under 3000 and still have some sort of field control, then you can activate this card and stall until your opponent fries to death. But chances are that, in a Burn deck, you'll be on the defensive right off the bat, and your opponent will be nailing all your m/ts, thus leaving you open to a flood of monsters.
Just an example: I go first, and I play Delinquent Duo, Forceful Sentry, and Confiscation. I leave your Minor Goblin Official and something that you'll draw next turn. Then you cry as you realize that you're never going to get your opponent down to 3000 with 1 effective card in your hand. Muahahaha. Of course, this may not happen often, but you get my point, hopefully. ;)