Necropotence is probably one of the most infamous examples of an underrated card in the game's history
Does it belong in a Marvel set
The Fifth Doctor pumps your team with +1/+1 counters at the end of your turn so long as that creature didnt attack this turn, waiting for the right time to attack
This is solid by itself, but he is also not too vulnerable to spot removal because every time you play a vampire spell, you create a 1/1 vampire
Creatures (13) Elvish Reclaimer x4 Emrakul, the Aeons Torn Endurance Kozilek, the Great Distortion Outland Liberator Primeval Titan x3 Ramunap Excavator Ulamog, the Ceaseless Hunger Instants (8) Crop Rotation x4 Once Upon a Time x4 Sorceries (4) Artifacts (8) Expedition Map x4 Pithing Needle x4 Lands (27) Bojuka Bog Boseiju, Who Endures Cavern of Souls Cloudpost x4 Dark Depths Eye of Ugin Forest x4 Glacial Chasm Glimmerpost x4 Karakas Maze of Ith Thespian's Stage x2 Vesuva x2 Windswept Heath Yavimaya, Cradle of Growth x2 Sideboard (15) Carpet of Flowers x4 Collector Ouphe Dismember x2 Endurance x3 Force of Vigor x4 Walking Ballista You can even use these lands in EDH with plenty of ways to tutor them, like Crop Rotation and Sylvan Scrying, alongside ways to copy them like Vesuva, Thespian's Stage, and Orvar, the All-Form
