Drachenwëckter

At the end of your turn, if a nontoken dragon creature you controlled left the battlefield this
turn, you may tap Drachenwëckter. If you do so, create a 0/1 dragon spirit creature token.
Tap a dragon spirit creature token you control:
Choose a card from your library at random. Put
it into play tapped. It has wild.
"Such a majestic being. Sleep at last, and be assured
that you will not be forgotten."
—Drachenwëckter, Protector and Speaker