My Etched Monstrosity deck
Dood. Not standard Anymore. You threw me off :P
However, with 3 Tempered Steel in the deck, you may consider dropping 1 forest, 1 swamp, 1 island, and one mountain for 4 more plains.
Or, depending on your budget. Get some dual lands.
(looks below at date posted)
Oh. Well... updated 2 minutes ago. posted 7 months ago.
I don't know why I'm even going to post this comment :)