Assemble the Clan

When Assemble the Clan enters the battlefield, search your library for up to five
dwarf creature cards, and put them into play under your control. Then, if you did, shuffle
your library.
Dwarf creatures you control gain +2/+2.
Drums echo like thunder, and horns bellow like raging dragons of brass. A mighty roar follows, of ten thousand steel-clad warriors, answering the call.