S Lee T wrote:
Another option would be for Red to move the red and green zimbies out of the column and attack the crown-carrying blue zimby column.
Alas, this cannot be done. A shaman may only move creatures they control. For a multitribe column of zimbies, a shaman me only move their own zimbies out of the column or move the entire column (as long as they have at least one zimby in the in the column so that they control the column). See page 6 of the rule book, "Moving multi-tribe columns."