This means that Emrakul can't be hit with Erode, On Thin Ice, Blasphemous Act, or Banisher Priest, and basically is only vulnerable to sacrifice effects
I assure you it isnt
The Halfling could really push casual tables around as a one-drop tapper of mana, even colorless, but it's very strong in Commander since so many things are randomly legendary without even needing a theme to toss it into
It forces everyone to vote for an artifact, creature, or enchantment card in your graveyard
Your opponents always have the option to discard, thus you should expect them to make that choice most of the time, as the idea of whatever construct, robot, or vehicle coming down for free will scare your opponent
Wingrattle Scarecrow Thanks to abilities that give creatures +1/+1 counters when they enter, persist creatures are the fuel for many infinite sacrifice combos, though Wingrattle Scarecrow can only be that in black+ decks like Gev, Scaled Scorch