The Tome of Dragons

{5}{t} Search your library for a Dragon card and
put it into your hand. Shuffle your library.
{2}{t} Exert two creatures you control; Exile target
Dragon creature
The Tome of Dragons is the greatest repository of
draconic lore in the world of Palanium. It contains
both information on how to converse with and learn
from dragons, and information on how to kill them.