Honorable Mention: City of Ass If we were to just look at its effect and lack of drawbacks aside from coming into play tapped, then City of Ass would be one heck of a good land, above all in formats where you can play more than one copy
Not Ranked: Board-Based and Type-Specific Payoffs There are so many cards that dont explicitly pay you off for having tokens, but tokens help you to leverage them
Or you can copy sac destroy land lands like Strip Mine or Wasteland or to copy a channel or cycling land in your graveyard like Boseiju, Who Endures or Barren Moor and get your ability and tap away
Ship Graveyard (Final Fantasy V) In Final Fantasy V, Bartz and his team get sucked up through a vortex and ended up in this dungeon
Its from a product few players have probably even heard about, so #themoreyouknow
Whispersilk Cloak can also keep Omnath safe pretty effectively