Cleaning up U5.0 a bit. Watching recent MODO drafts sparked a renewed interest in the Portal, particularly in its flexible ability to O.Stone in a pinch; and no one O.Stones anymore in any case, so it seemed like an easy swap. Jace is benched along the same lines that the Vault was: it simply may not be interactive enough to be "properly competitive." The quotes here are to indicate conjecture (cf. a stated position). The slippery slope in this regard is also duly noted here. The other U-->G swaps were more for color-balancing purposes--though I do believe that the Craterhoof redundancy will be appreciated. Yarok is a requested experiment, which, to be fair, I am optimistic about given the impressive performance Pod has recently put on.