Sokka, Impulsive Innovator

When Sokka, Impulsive Innovator enters
the battlefield you may search your library
for a Boomerang, reveal it, put it into your hand, then shuffle your library.
{x}{u}: Scry X.
{x}{x}{r}{t}: Exile the top X cards of your library. Until the end of your next turn, you
may play those cards.