#7 I like the implication of Tropius being an ancient pokemon that just happened to survive into present day in Aerodactyl's art

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Having a Syr Konrad on the field to kill everyone springs to mind
While they aren't the most expensive Swamp, they are one of the more storied basic lands you can own
Dross Scorpion A useful enabler in sacrificed-oriented artifact EDH decks with Commanders like Jan Jansen, Chaos Crafter or Oswald Fiddlebender, Dross Scorpion untaps a lot of things
And of course, theres Armageddon for mass land destruction