Mathmech Superfactorial

Trap
Target up to 3 non-Extradeck creatures with "Mathmech" in their name, from your graveyard with different names, then choose one:
•Cast a Synchro creature with "Mathmech" in it's name, without paying it's mana cost, and using the 3 creatures as sacrifice, if they are sacrificed this way shuffle then in the deck
•Cast a XYZ creature with "Mathmech" in it's name, without paying it's mana cost, and using the 3 creature as the attached auras.