Stargazing Prophet

Whenever you scry, target creature you don't
control gets -X/-0 until end of turn and target
creature you control gets +Y/+0 until end of
turn, where X is the number of cards you chose
to keep on top, and Y is the number of cards
you put on the bottom of your library.
"The constallations were put up there by beings that
created the land and the skies, with the sole purpose
to guide us. Who are we to defy that?"