Ioka, Serene Whisperer

At the beginning of your end step, if you did not
cast a creature spell this turn, you may manifest
the top card of your library. During your turn,
instant and sorcery spells you cast cost X less,
where X is equal to the number of
face-down creatures you control.
{g}{u}{r}{t}: Scry 2.
Be patient, child. Each moment is a
mere flake in the glaciers of time.