The rat kings inherent graveyard hate is supplemented by, again, Agathas Soul Cauldron, and we can also see The End being trialed as an answer to one-trick Atraxa decks
Lim-Dul's Vault Last of the golden oldies
Rise of the Salamangreat works like a typical Ritual Spell for the most part allowing you to Ritual Summon a Salamangreat Ritual Monster using monsters you control or in your hand to Ritual Summon it, but it can also let you banish Salamangreat Link Monsters if you control a FIRE Link Monster
3 episode of Weekly MTG hosted by Blake Rasmussen, where he was joined by Secret Lair Senior Director Lindsey Bartell and Senior Product Designer Steve Sunu
I also considered adding the rarely seen Shared Discovery to this list, because now that Treasure Cruise is banned in MTGO pauper, shared discover is the only straight "draw three" card left in pauper
You can only use each effect of "Fluffal Octopus" once per turn