The Cauldron is also a legendary card itself, so it can be exiled and recast with Kethis
Theres nothing wrong with Cubing with cards that are three or more colors, but they are absolutely trickier as a category than mono-color and two-color cards
Into the Inklands had two rules cards per pack, explaining the new Locations mechanic
Doing so gives that spell additional or alternative effects
Deck boxes like the Ultimate Guard Boulders completely open up, which leaves you with two compartments to store your tokens, dice, counters, and other various things you might want to have close by during a match
Commander Five new commander decks are coming with Tarkir: Dragonstorm, one for each of the three-colored clans