Missing Link

When Missing Link dies, search your library for any number of Bird creature cards with total converted mana cost 5 or less and put them onto the battlefield. Then shuffle your library.
"This is it... the key to all of this, the confirmation of my theories. The birds of the world did have ancestors, and if they had Ancestors... then Aenopteryx must exist. And if it exists, I will find it."
—Gledon, Megafauna Biologist