Ok, I am playing a sligh deck at the moment. Now I don't want my entire mana base to consist of only mountains. I think by taking a mountains only approach, this will slow me down a bit. Anyway, I wanted opinions on what type of mana base you would run in this deck. Any comments will be helpful, thanks!

2x Ball Lightning
4x Grim Lavamancer
3x Orcish Librarian
2x Rathi Dragon

2x Breaking Point
2x Browbeat
4x Chain Lightning
3x Flame Jet
4x Incinerate
4x Lightning Bolt
4x Pillage
1x Wheel of Fortune
4x Seal of Fire

3x Barbarian Ring
12x Mountain
4x Rishadan Port
1x Strip mine
1x Wasteland

For a while I was running 4x wasteland. Wasteland with Pillage gave me the ability to deny multi colored decks a certain type of land. I just changed them to rishadan port's and haven't played the deck enough to figure out if it will be successful or not. I think the wasteland had better psynergy with the grim lavamancer, but not sure.

Thanks for the great idea's Shake. Appreciate you taking the time to compose 2 decklists. I have most of the cards suggested so I will try both decklists and make the necessary adjustments to my deck. Thanks again!

The artifact posing the biggest threat for me is actually the Isochron Scepter/ orim's chant or counterspell combo. Since I play creature cards with the Sneak Ability, the counterspells don't really affect me. The orim's chant can sometimes present a problem though. I've thought about adding Aura Shards to the deck (or at least sideboarding it) instead of the sterling groves.

This is my deck list:

creatures:  10

4x Birds of Paradise
2x Serra Avatar
2x Weatherseed treefolk
2x Worldgorger Dragon

spells:  21

1x Balance
1x Berserk
1x Crop rotation
3x Disenchant
1x Enlightened tutor
4x Fling
2x Gaea's Blessing
4x Gamble
4x Swords to Plowshares

enchantments:  6

4x Sneak Attack
2x Sterling Grove

artifacts:  3

1x Lotus Petal
1x Mox diamond
1x Sol Ring

lands:  20

1x Diamond Valley
4x Forest
3x Mountain
4x Plateau
4x Savannah
4x Taiga

Let me explain how the deck works.

The deck revolves around Sneak Attack and Fling. I usually get a kill in turns 3-5. With this combo, you can play a massive creature early in the game. Even if the creature is blocked, you can cast Fling to sac the creature for direct damage to opponent equal to power of creature. I chose creatures that I could sac more than once. Weatherseed Treefolk and Serra Avatar both return to my hand and deck. If I cast a World gorger Dragon, it removes the Sneak attack from the game, letting me keep the dragon in play permanently. I also included a berserk acting as a 5th fling. I put plenty of tutoring ablility in the deck with 4 gamble, 1 elnlightened tutor, and 2 sterling grove. The gamble works well with the avatar and the treefolk. The problem i have is with opp. enchantments and artifacts. I cant' find room for more removal. I've removed creatures before, but that presents the problem of not having no creatures in hand when i cast sneak attack. Any advise would help me out, I would also like to hear your general opinion of this deck, thanks