While these arent confirmed to be real, they do look genuine enough
You are basically going to draw an extra card during your upkeeps
This adds something to the board immediately, and the thing you get back might even be able to help station it
By optimizing your costs, its important to include some budget-friendly cards, and Cursed Melfolk is exactly what youre looking for
Once transformed, it becomes Polukranos, Engine of Ruin, which is a 6/6 with reach and lifelink and reads: Whenever Polukranos, Engine of Ruin or another nontoken Hydra you control dies, create a 3/3 green and white Phyrexian Hydra creature token with reach and a 3/3 green and white Phyrexian Hydra creature token with lifelink. Even without any other hydra creatures, the fact this card will split into two is amazing - but with some clever deckbuilding, it could make your deck unkillable
Appearing rarely in collector boosters of Innistrad: Crimson Vow, her rendition of Sorin, the Mirthless has, contrary to the name, made a lot of players very happy indeed