Medivh, the Oracle

Players play with the top card of their libraries revealed. At the beginning of each upkeep, you
may scry 1. As long as the top card of a player's
library is a creature, they may activate its activated
abilities as though it were on the battlefield.
3 XP: {u}, {t}: Transform Medivh. Activate this
ability only as a sorcery.
7 XP: {4}{u}, {t}: Target creature's owner puts it
on the top or bottom of their library.
10 XP: Activated abilities of creatures on top of
your library cost {2} less to