Been working on this deck for a while to hold its ground in a bracket 3 pod. It's definitely a mana hungry deck with the Throw ability and casting/equipping artifacts.
I believe I have solved the mana with the new land base, as well as the signets. Multiple ways to reduce equipment cast cost and equip cost.
Combo lines are:
Isochron Scepter/Dramatic Reversal for infinite artifact mana to equip and throw
Reaver Cleaver/Aggravated Assault to take out a player if I can deal commander damage
Rings of Brighthearth/Basalt Monolith same as Zirda
Zirda/Basalt Monolith for infinite mana to equip and throw
Forensic Gadgeteer/Basalt Monolith for same as Zirda
Grafted Exoskeleton/Super State to hit everyone for 11 poison
Goldfishing, I feel like draw speed could use some work, but I am open to suggestions overall, though I do want to keep all the SL cards from the Cap pack in the deck. Would be willing to throw $100 at this deck to get it running really well.