Curse of Leeches // Leeching Lurker
The day-and-night mechanic usually turns a creature stronger under one condition and weaker under the other; here the two faces are not even the same card type. Under night, you get a lifelinking body: a straightforward attacker whose combat damage refills you. When day breaks, that body evaporates into an Aura pinned to an opponent, draining a point off them and feeding it to you each upkeep. The transform clause does the clever bit: as it flips into the curse side, it reattaches to a player, so the card is not merely changing stats but changing what it targets and how it wins. That makes the daybound/nightbound cycle read less like a power dial and more like a strategic mode switch, from creature-based pressure to a passive, uninteractive life-drain that no longer needs to attack into anything. The trigger conditions cut against the natural rhythm of a game: spending your turn without casting a spell pushes toward night and the creature, while a busy two-spell turn tips it back to day and the curse. A leech that is a body when you are behind on the board and a slow bleed when the board is stalled: the flavor of a parasite that swaps forms depending on how much blood is available is doing real mechanical work here, not just riding along with the art.
