: Add . , : Investigate (Create a colorless Clue artifact token with ", Sacrifice this artifact: Draw a card."). At the beginning of your end step, if you sacrificed three or more Clue (A Clue is an an artifact with ", Sacrifice this artifact: Draw a card.")s this turn, transform Havengul Laboratory.

When this land transforms into Havengul Mystery, return target creature card from your graveyard to the battlefield. When the creature put onto the battlefield with Havengul Mystery leaves the battlefield, transform Havengul Mystery. , Pay 1 life: Add .