First of all, let me say hello, long time no see. It is good to see you up and about again.
Second of all, I have a few comments on your deck. From what I can see, the purpose of this deck is to get some big fat nasties on the board as fast as possible, and clear the way with an Earthquake. The only problem I see with this deck is the Skizzik.
Don't get me wrong, Skizzik is an awesome creature. I love him, but he doesn't belong here. Trust me. The card you are looking for is Kavu Titan. He is raw, and awesome. He costs one more than Blasto or the Hordes (after the Kicker, that is), but he has trample, which has never been a bad thing. Also, he becomes a 5/5 after the Kicker is paid, so he is more likely to survive a good Earthquake.
Thirdly, I would drop Scorching Lava for Breath of Darigaaz.
Breath of Darigaaz, 1R
Sorcery
kicker 2
Deals 1 damage to all creatures w/o flying and all players. If you paid the Kicker, Breath of Dagariz deals 4 damage to all creatures w/o flying and players.
Not too bad, huh?
Ok, so it doesn't take out flying critters. If you are that worried about flyers, play with Hurricanes in your sideboard. Sure it will kill your birds, but who cares. You loose one bird, they loose 3 faeries. Hmm. Good trade.
This is how I would build the deck.
Lands/Mana
10 Mountains
6 Forest
4 Shivan Oasis
4 Llanowar Elves
4 Birds of Paradise
Big Fat Critters
4 Kavu Titan
4 Blastoderm
4 Balduvian Horde
Clear the Way
4 Earthquake
4 Breath of Darigaaz
4 Seal of Fire
4 Urza's Rage
4 Pillage
There ya go. Try that out on a few unsuspecting friends. hehehe