Just wait for your opponent to target that pesky Symbiotic Wurm or Verdant Force in his graveyard with Zombify or Reanimate, and send that bad boy a-packing back into the deck
Smothering Tithe They can call it Smothering Tithe, but this is Rhystic Tithe and we all know it
I thought that Skin Invasion would just be too narrow and convoluted to go in any deck what so ever but in testing, again much like Gossipmonger, the Skin Invasion keeps getting played
While Vecna itself is powerful, we can't guarantee that we'll draw all three pieces (The Book of Vile Darkness, Eye of Vecna, and Hand of Vecna), which means the big challenge is trying to make the individual Vecna pieces as strong as possible so our deck can compete pre-Vecna, while also knowing that the Zombie God should be able to take over the game once we find all three pieces
While most of these cards want to be part of a dedicated gravebreak deck, this just works in reanimator and a bunch of archetypes