Some ideas on cards to remove:
- Blow your House Down - Kinda useless if you're not devoted to an aggro theme, and I don't know about you, but I can't imagine getting the benefit of being able to target a wall. Also, it will not help you at all if you don't have any creatures on the battlefield and/or do not want to attack while it's in your hand.
- Chilling Trap - You already have enough tapping-down and return-to-hand effects. Damage reduction isn't going to do much for you, and you only have 2 wizards in the deck anyway.
- Seven Dwarves - Since you only have four of them in there, they aren't very useful. They don't contribute at all to the theme of trying to find your combos. They have no card draw, harassment, or scry effect, no upside trigger from you drawing cards, and they are an absolute dud draw late-game. All said, they should probably go.
- Pyroclastic Hellion - I can see why you have it in there. It's important (especially in casual or draft games) to have at least one semi-large, semi-expensive creature that can help you keep up with everyone else at the table. It's good to have, but again, it doesn't really fit in with everything else in the deck.
All in all, it's not a bad deck, especially considering your limited card options. One thing that I did notice, however, is that in the sideboard there are additional copies of cards that you only have one of in your main deck. Take
Deliberate, for example. It's a great card because it lets you scry 2 to
sift through your deck a little, and then it lets you draw a card. It's good early game, and it's good late game. These are the kinds of cards that are great in casual playgroups and draft events.
My final point that is worth considering when trying to thin out a deck is that if it's not worth having 2 copies of, it's not worth having at all. For example, if you're not willing to use a second slot for a second copy of
Syr Carah, the Bold, why is it in there in the first place? The best decks are concise and to-the-point, so... think about it.
Anyway, nice deck. Good luck with it and most of all, have fun out there.