Sedge Troll could both regenerate and become a 3/3 creature with just a Swamp on the battlefield
On the flip side, a Standard landfall deck running Azusa, Lost But Seeking may run several playsets of modal lands on top of a higher normal land count to guarantee hitting extra land drops to enable Omnath, Locus of Creation
The better versions have a wincon or two like Thassa's Oracle when you get decked, or Aetherflux Reservoir
The end the turn clause has a few benefits too, like stopping death triggers
Again, with only 40 cards you are spread thin on answers and may need the same one repeatedly in a long gruelling match for which the Elixir comes in handy
For one, being puts it in a strange (though unique) color combination for dragons, one that misses a lot of the typical dragon support