Orel, Puregrove's Heart

Primal {w}{u}{b}{r}{g} (You may cast this spell for its primal cost. Spend only mana produced by basic lands to pay that cost.)
Reach, trample
When Orel enters the battlefield, if its primal cost was paid, you may search your library for up to three creature cards with converted mana cost 2 or less, put them onto the battlefield, then shuffle your library.