I'd suggest concentrating more on either populating tokens or big creatures, bot not both. Lox Smiter is a great card, but it doesn't produce any tokens or populate any tokens out there. Your Wayfaring temples become more powerful the more tokens you get out. Start dropping Lox and add the max of Wayfaring. Add another Garruk as well. Think about some general purpose removal, especially something that can handle plains walkers if you might be facing them. Just my $.02, which is probably worth even less.
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Here's what I've got going on. The only lifegain is thru Trostani, Selesnya's Voice, but with the rate of population it should be more than plenty! Mana ramped thru Axebane in cooperation with the Gatecreeper Vine... Multiple token gen and populate avenues... Removal through Selesnya's Charm, Oblivion Ring, and Sundering Growth... Some anti-necrophillia protection by Dryad Militant... http://www.mtgvault.com/ViewDeck.aspx?DeckID=394038