Grendel, Symbiotic Dragon

Flying, protection from white
Undergrowth — As you cast this spell, reveal the
top X cards of your library, X equals the number
of symbiote type cards in your graveyard. Put a
symbiote permanent card with converted mana
cost X or less from among them into play. Put
the rest on the bottom of your library.
"The winged dragon of Klyntar spread its wings, and
the sun cowered behind it."