Suggestions for Poor Mans Voltron

Here's what I have so far. Not actual numbers, just stuff I would use. Rules for Poor Mans is 5 uncommon, 55 common, no rares or mythics. So Loxodon Warhammer is out.

Trying to go for a Metalcraft/Voltron theme here and R/W seemed to be the best as I'd have access to Galv Blast, Blade-Tribe Berserkers, and Goblin Gaveleer (This guy will wreck with Grafted Exoskeleton on him). White has been pretty good with the whole 'If this is equipped +buff' and the new Metalcraft has only helped in the field of White.

Artifacts
2x Spidersilk Net
3x Accorder's Shield
2x Bonesplitter
2x Golem-Skin Gauntlets
2x Grafted Exoskeleton
2x Strider Harness
3x Myr Adapter
4x Ancient Den
4x Great Furnace
Creatures
2x Skyhunter Cub
2x Leonin Den-Guard
2x Sunspear Shikari
2x Ghalma's Warden
2x Goblin Gaveleer
2x Blade-Tribe Berserkers
2x Auriok Glaivemaster
2x Auriok Sunchaser
2x Kitesail Apprentice
2x Kor Outfitter
Land
5x Mountain
5x Plains
2x Terramorphic Expanse
Spells
4x Galvanic Blast

~Zuty