Genesis DeviceHow it works & interactions with other cards

Initial Acquisition

When Genesis Device enters the battlefield, you immediately get to search your library for either a basic land card or a Planet card. You put that card onto the battlefield tapped and then shuffle your library. This ensures that even if the artifact is destroyed later, you have already gained a permanent resource advantage.

The Mass Reconstruction Process

The second ability is a sorcery-speed activated ability that requires five mana, tapping the device, and sacrificing it. As it resolves, you choose any number of lands you control and sacrifice them. Following this sacrifice, you search your library for up to that many land cards, putting them onto the battlefield tapped. This allows you to swap out tapped lands for fresh utility lands or simply thin your deck.

Strategic Execution

Because the activated ability is restricted to sorcery speed, you cannot use it in response to an opponent's spell unless you have a way to grant the ability flash. Additionally, the number of lands you search for is capped by the number of lands you actually sacrificed during the resolution of the ability.

Common Missteps

Players often forget that the lands searched for with both abilities enter the battlefield tapped. This means you generally cannot use the mana from the new lands on the same turn you activate the Genesis Device. Also, note that while the first ability searches for basic or Planet cards, the activated ability can search for any land cards, including non-basics.

Interaction examples

Early Game Acceleration

Arcane Signet

On turn two, you cast Arcane Signet. On turn three, you use the mana from your lands and the Signet to cast Genesis Device. When it enters, you search for a basic Forest and put it onto the battlefield tapped. You have successfully ramped from two mana to four mana potential for the following turn.

Protecting the Engine

Swiftfoot Boots

If Genesis Device were a creature, Swiftfoot Boots would protect it. However, as an artifact, the Boots don't provide hexproof here. You must rely on the Device's own durability until you are ready to pay the five mana and sacrifice it to trigger the mass land swap.

The Great Reshaping

With seven lands on the battlefield, you activate Genesis Device's second ability during your main phase. You sacrifice the Device and all seven lands. You then search your library for seven new land cards—perhaps specific utility lands or Planets—and put them all onto the battlefield tapped, followed by a shuffle.