Kenrith's Transformation bug?

madwren
madwren Posts: 2,226 Chairperson of the Boards
Wording on Kenrith's Transformation is that it changes target creature's power and toughness to 3/3.  It seems instead to be changing the target creature's BASE power and toughness to 3/3, which is a big difference when used on token stacks.  Would appreciate a clarification on card or functionality (since there are other cards in the set which do affect base power/toughness).