Chain of Vapor (Future Sight) [Mystery Booster 2] Time Lord Doctor As long as the top

As long as the top card of your library is black

put an hour counter on each permanent you control named Midnight Clock

using their unique skills to conquer challenges and find data to chase down the Evil Power Master and stop him from enacting his sinister plan

Whenever Field of the Dead or another land enters the battlefield under your control

Chain of Vapor (Future Sight) [Mystery Booster 2] Time Lord Doctor As long as the topSet: Mystery Booster 2 Type: Instant Rarity: Uncommon Cost: {U} Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land. If the player does, they may copy this spell and may choose a new target for that copy.