Determined Apex Earthmover

Flying
{r/g}{r/g}{r/g}, {t}: Search your library for up to X
Apex land cards, put them onto the battlefield
tapped, then shuffle your library. X is equal to
the amount of Apex creature you control with
3 or greater power.
This spell costs X less to cast, where X is
the greatest power among Apex creatures
you control.