If you were to play more than one creature after Wingnut, you should activate all three keywords
This unassuming rodent, printed in Return to Ravnica, basically required an immediate answer, or it would multiply out of control, each copy making the rat horde, and the rats themselves, grow bigger and bigger
Onslaught During Onslaught design we spent some time searching for a cycling-like mechanic
8 Helm of the Host Any card that can help you skirt the Legend rule is worthwhile, but Helm of the Host then takes it further by copying the creature for you
There was still plenty of fun to be had with Planar Chaos design, from the playtests where every card was a reprint in a new color to the many offsites at Mark's house where we lounged around, browsing through Magic Encyclopedias and throwing out idea after idea about cards that would be exciting to bring back in a new color
As time goes on though, I have faith that the land(s) will heal and the archetype will continue to grow and bloom