Salient

Eight creatures -- 4 Lodestone Golem, 4 Magus of the Tabernacle.

If they're locked out and have nothing in play, that's all I need. This deck aims to shut down the opponent and win over the long term.

Why Spell Blast? Wouldn't you rather have Power Sink instead?

Dude.

Four Defense Grid. Four Trinisphere. Four Duress. Four Inquisition of Kozilek. Four Xantid Swarm.

Then play whatever else you want. :-)

Look, if you can successfully cast and resolve a 10+ mana spell, under anything except truly exceptional circumstances, you ought to win the game. That was the idea behind Darksteel Colossus, and that's the idea behind the Eldrazi.

That is a fantastic choice of deck description. I salute you.

However, it saddens me that Goblin Piledriver was unable to join his friends here.

Find a way to put Tears of Rage in here and you could forget about the other Eldrazi...

Needs ten thrumming stone and twenty black lotuses. :P

I'd trade out the Coat of Arms for Chrome Mox -- the Coat of Arms effect is redundant with what the rats already do to each other, and Chrome Mox would get this rat party started more quickly :-)

The sideboard is always a work in progress. Your comments and questions are welcome!

Also: if you would prefer only suggestions which use cards you own, make sure to say so and help by listing various cards you are considering using -- otherwise we usually assume that folks want advice on what cards would be good to purchase (for cheap prices) to enhance the deck. I hope suggestions for what to buy are not offensive to you; it's meant to be helpful.

It's dangerous to rely too much on one card... can you think of

For example, you might find creatures which have really cool comes-into-play or leaves-play effects, like Solemn Simulacrum. There are lots of cheap (in the sense of not costing much money) creatures with neat abilities -- try an Evoke deck with Shriekmaw.

To get some information about which cards have Evoke, you can go to Magic the Gatherer website and search Evoke:
http://gatherer.wizards.com/Pages/Search/Default.aspx?text=+[evoke]

The advantage is, instead of dodging a negative effect from Echo, you're getting repeated use of a positive effect from Evoke (the leaves play ability).

Oops, I forgot to mention I'd swap out Impending Disaster for a Fireball.

Also -- work on getting four Lightning Bolt, and substitute it for nearly any other spell in the deck. Three damage for one mana is exactly the kind of early thump a sligh-burn deck desperately needs.

I'm not a big fan of burn, because it's hard to draw

If you consider your average damage per spell is likely to be less than two (especially once you average in countermagic, needing to burn creatures, etc), you need to fire off more than ten burn spells somehow. That's very difficult to manage, so burn is rarely an efficient sole strategy.

A creature-based attack plan, with burn support to clear out blockers, is usually more competitive and successful. Consider decks like Legacy Goblins (a creature aggro deck with some burn support vs. blockers) versus Legacy Sligh (a straight burn aggro deck). Goblins does passably well, Sligh always bombs out.

If you changed just one thing about this deck, I would remove Book Burning and replace it with four of Valakut, the Molten Pinnacle, and I'd swap out Impending Disaster for

Why no Book Burning? To a novice, the card looks amazing. But any sensible opponent will let you mill them six, since your overall gameplan won't deck them -- there's no way a burn deck survives long enough to deck an opponent. So the Book Burning doesn't really help you (except against opponents who really don't know any better, or opponents who rely heavily on weird top-of-deck tutoring effects but don't run countermagic -- and you shouldn't build your deck around those marginal opponents). Book Burning basically says "spend two mana, and maybe you'll catch their best card in the top six cards, or maybe their best card was seven cards down and now becomes the card they draw next." Not a winning use of mana.

I am happy to see Swarmyard. :D

Creating a new account with which to harass me was quite clever, Jeff D-Joe Guiguizian, I'll grant you that. But... not *that* clever.

...Rampant Growth? ;-)

This deck has found a new best friend in Misty Rainforest...

I'd also drop all the Everflowing Chalices and the Mind Spring in favor of an additional Treasure Hunt, an additional Tectonic Edge, and an additional Oblivion Ring. Post-ROE-release, Tectonic Edge is going to be wonderful, but it doesn't pair all that well with EC.

I realize EC speeds up dropping Iona... but you only have one Iona. And there's a reason you only have one Iona -- you've usually won before she hits play. Dropping her a little faster is not your concern, then. This deck will win much more frequently with Jace deck-aggro and/or Gideon board-wipe-aggro.

(To be clear, what I'm saying is that Jura *when you've used his second ability* dies to most removal. I am aware that Jura is not always a creature.)

Jura dies to most removal in the format, like Terminate and Path to Exile, so you should consider running some Hindering Light as additional protection. If nothing else, Hindering Light is better for you than Essence Scatter. Essence scatter is low-value for you -- you can always wipe creatures post-board with Day of Judgment, and/or with the Jura Jedi Mind Trick.