A long term goal was/is to have each three-color trio have a theme that stretches across all three, with one 3-color legend as a signpost and payoff. For Jeskai, this theme was cycling, which touched upon some of the looting/madness/draw-2 payoffs in UR and some of the token payoffs in RW. In practice, even a fully realized Jeskai cycling deck was too clunky to compete. Additionally, many of the cycling cards necessarily included to provide a critical mass of cycling were otherwise among the least appealing, least synergistic picks in the cube.

Has theme:
Sultai - self mill
Mardu - tokens aristocrats
Abzan - life gain
Grixis - madness
Jund - lands

Needs theme:
Jeskai
Temur
Esper
Naya
Bant

Most of the U/R/W cards being added are cards that were past cuts that still have a home in the cube's remaining archetypes. Also added in this update are some new cards to support the burgeoning WUBRG/Domain theme, which is increasingly achievable now that all 10 triomes have been printed. (And which conveniently doesn't require very many of dedicated card slots.)

Lastly, Disintegrate and Weakness join the cube in my quest to include as many playable cards printed in 1993 and 1994 as possible.