Woohoo! This is just what my unpowered cube has been looking for. Too bad about non-legendary, probably won’t be worth it for a lot of cubes already running animate dead. For us it only misses Elesh, Atarka, and Emrakul
As someone who has played a bunch of pauper reanimator, I think that you can still get It that Betrays or Ulamog's Pathraiser out of the yard with this is damn good. Splash in some stuff to give it haste and it is hard to lose if you swing in that early.
I think this is closer to Dance of the Dead / Shallow Grave / Corpse Dance than it is to Reanimate / Animate Dead / Exhume / Necromancy / Life // Death. Having all the downsides of Unmarked Grave AND severely nerfing Woodfall Primus is a huge bummer. That being said, redundancy is always a good thing for combo decks and this is a good option for larger cubes. This is nowhere near as important as Unmarked Grave though since Entomb effects are much rarer than reanimation effects.
Hopefully we'll get a card called Undying in Modern Horizons 3, although it'll probably cost more mana : /
Yeah, this is definitely closer to those effects, but I run Dance of the Dead already, and I'm happy to have another low-cost reanimation spell, even with some hoops, so it'll make it into the cube for me. Agreed on your comparison, though.
I’m actually excited about two non-legendary reanimator cards because it means I can justify tweaking the list slightly around them. In my opinion this is the nail in the coffin for Sheoldred which was already mediocre in our list. It also increases the stock of some of the artifact fatties.
The more I think about it, the more I don't like it. Unless we get an abundance of Entomb / Unmarked Grave effects, you're rolling the dice on looting and hoping you have a non-legendary creature to pair with this. The odds aren't great when a good chunk of your targets will probably be legendary. Unmarked Grave gets around this since it's a tutor (so you only need 1-2 non-legendaries) and the fact that all the other reanimation spells don't care if the creature is legendary or not.