Arcane Astrologist

Level 1 Blueprints- Artifact token with "sacrifice this artifact: draw a card then discard a card." (Riggers you control assembling a level 1 or higher contraption may choose these blueprints.)
{2}{t}: Assemble a level 1 contraption. (Choose a level 1 blueprints ability of a creature you control. Put a token of that type onto the battlefield under your control.)