Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Ashnod's Altar

Foundry Inspector

Artifact spells you cast cost {1} less to cast.

Iron Myr

Shimmer Myr

Flash
You may cast artifact spells as though they had flash.

Sol Ring

Scrap Trawler

Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser mana value.

Vedalken Orrery

You may cast spells as though they had flash.