This four-mana artifact triggers if an artifact or creature entering the battlefield causes a triggered ability of any permanent you control to trigger, adding a second trigger to the stack
You need at least six targets in one colour or more like 8 if you want to be able to actually reliably fix for two colours with the Landscape
Finally, while Survival of the Fittest takes longer to get going, it'll provide a tutor for your best creature every turn you're able to feed it
(To manifest a card, put it onto the battlefield face down as a 2/2 creature
The only sacrifice you make is that Teferi is untapping those lands at the end of your turn, so you can't immediately reuse them, but that's okay
Dragons, Slivers, or Allies will make the best use of this, but Vampires and Dinosaurs will still be happy to run a Pillar in the 99