Zopira, the Formchanger

Changeling
When Zopira enters the battlefield, search your library for a creature card with 6 or more
creature types, reveal it, put it into your hand,
then shuffle your library.
{1}{w}{u}{b}{r}{g}, {t}: Target creature gets +X/+X
until end of turn, where X is the number of
creature types it has. This effect cannot increase
that creature's power or toughness by more than
10.