Primathmech Alembertian

Extradeck XYZ- As a additional cost to cast this spell, attach two creatures or more from the battlefield as auras to this creature, they are no longer creatures.
{p/w}, sacrifice a creature: target a creature with "Mathmech" in it's name from your hand or graveyard put it into the battlefield. Activate this ability inly once during, during your turn.
After you cast this spell you may search your library and choose one and add to hand by detaching auras:
2:A spell "Mathmech" in it's name.
3:A creatur