Curse of Leeches // Leeching Lurker [Innistrad: Double Feature]

Enchant player

As this permanent transforms into Curse of Leeches, attach it to a player.

At the beginning of enchanted players upkeep, that player loses 1 life and you gain 1 life.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

LifelinkNightbound (If a player casts at least two spells during their own turn, it becomes day next turn.) First darkness falls. Then it burrows in.