Construct Overlay 2 (As an additional cost to cast this creature from your Extra Deck, sacrifice two Construct creature permanents with converted mana cost 4 you control. Put two Overlay Counters on this card when it enters the battlefield.)

{1}, remove 1 Overlay Counter, {T}: take one Construct creature spell with converted mana cost 4 from your library, reveal it, and add it to your hand. Your library is then shuffled.

When this card is destroyed, you can put target Construct creature spell with converted mana cost 3 or less from your graveyard onto the battlefield tapped.