It can protect valuable cards from black discard, and can combine with library shuffling effects to improve your draw (such as Thawing Glaciers, Flooded Strand, or Ramosian Sergeant)
Partner Legendary Planeswalker - Szat Fodder (CTRL to add secondary) Gain and Drain Gain and Drain (CTRL to add secondary) Land Minas Morgul, Dark Fortress Minas Morgul enters tapped
Once you have gained enough life to mill them out, get back to the starting position (a fresh Kiora you can cast and a Karn that can grab the Cauldron once more with one activation left
Breeches, Brazen Plunderer and Malcolm, Keen-Eyed Navigator, for example, are a very obvious combination that don't pair well with other cards
In the end, it became clear that a majority of R&D members do not consider gum food and that an even larger group feel gum isn't eaten
Foundry of the Consuls is a different type of "creature" land, in that it must be sacrificed before it can actually produce creatures