Prismatic Golem

Affinity for Basic Lands (This spell costs you {1} less to cast for each different basic land you control.)
When Prismatic Golem enters the battlefield,
search your library for up to X different basic
lands. Put them onto your battlefield tapped.
{t},{w}{u}{b}{r}{g}: You may cast a multicolored spell
from your hand without paying it's mana cost.