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Which means, I think, that you can actually skimp on the overall number of lands in your deck

1 Myrkul, Lord of Bones

There are also a couple of cards that are geared towards getting lots of cards in the graveyard more generally

This monster alone gives the Deck access to Rank 5 monsters it normally wouldn't use

I dont think its better than Pack Rat or Underworld Connections, but if black aggro/devotion decks need another three-drop, this guy is certainly worth considering

If youre interested in any of these four formats, I recommend getting some experience in competitive Standard or Pauper first to see whether you enjoy playing Magic at this more optimized level