Rybot the Robot

Artifacts you cast have Affinity for Artifacts
{w}{t}, create a 0/1 Rybot Artifact Creature
{3}{r}{t}, exile target artifact card from your graveyard, create a token that's a copy of exiled
card except its a 0/1 Rybot Artifact Creature
{4}{u}{t}, sacrifice target artifact, search your
library for target artifact, put it into your hand