Neurok Stealthsuit

Equipped creature has shroud. (It can't be the target of spells or abilities.)
{U}{U}: Attach Neurok Stealthsuit to target creature you control.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Etherium Sculptor

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

Foundry Inspector

Whispersilk Cloak

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip {2}

Enthusiastic Mechanaut

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