Keeper of the Accord

At the beginning of each opponent's end step,
if that player controls more creatures than you,
create a 1/1 white Soldier creature token.
At the beginning of each opponent's end step,
if that player controls more lands than you,
you may search your library for a basic Plains
card, put it onto the battlefield tapped,
then shuffle your library.
RWGWGWARAHHHHWWRGGWRWRW.