So Sunday I picked up my Brother's War set of Collector booster box, bundle, and Urza Commander deck.

Now I'm looking to tweak the deck some. The deck is designed to pump out token construct creatures and eventually overwhelm your opponent(s) with sheer numbers of artifact creatures.   So I was looking for ways to build on that or protect/buff them or other ways to utilize them.    

Here's a full list of what I want to add.  What's good from this list and what from the deck should be pulled to make room?

Goldbug

Blitzwing

Liberator, Urza's Battlethopter

Thopter Mechanic

Myrsmith

Glint-Sleeve Artisan

Replication Specialist

Combat Thresher

Calamity's Wake

Tocasia's Welcome

Born to Drive

Mass Production

Kayla's Reconstruction

Dauntless Unity

Forging the Anchor

Urza's Command

Drafna, Founder of Lat-Nam

Moonsnare Prototype

Urza, Prince of Kroog

Urza, Lord High Artificer

Machine God's Effigy

Kuldotha Forgemaster

Wondrous Crucible

Wurmcoil Engine

Unwinding Clock

The Mightstone and The Weakstone

Urza, Lord Protector

Thran Vigil

Emergency Weld

No One Left Behind

Powerstone Fracture