They can often smuggle card space onto promotional faces, but thats part of why promotional cards often dont have any reminder text
The choice of planes includes Norn's Dominion because thats too ridiculous to ignore, some wacky phenomenon cards (we can have two of them), and planes that benefit from having small creatures, Naya creatures, or tribal interaction
Ghost jokes aside, this pairing has been pulling its weight, as it continues to climb from its starting point in the $90s, and has continued to skyrocket up past the $120 mark
Also, since the six-drop beater 6/6 trample Soul of the Harvest is an ETB one, you can get it over and over again with blinks or recursion
Standard: In Standard, some of the Sagas will likely see play, but there are relatively few ways to really abuse the enchantments, which means they are more likely to be played as fair cards and used for their effects, and then will spend the rest of the game in the graveyard