Conjure Animals

Reveal the top X cards of your library. Put up to
X creature cards from among your hand,
graveyard and the revealed cards onto the battlefield, then put the revealed cards on the
bottom of your library in a random order. They
gain haste until end of turn. Sacrifice them at the
end of turn.
Conjuring wayward spirits into the form of animals is
a common trick used by druids to create an overwhelming advantage on the battlefield.