Zio, Dragon Progenitor

Flying, Trample, First strike, Deathtouch,
Lifelink
{w}{u}{b}{r}{g}: reveals cards from the top of your
library until you reveal a dragon creature card,
puts that card onto the battlefield, then shuffles
the rest into your library.
"Zio, the broodmother, progenitor of dragonkin, incarnation of power."
— Ancient temple inscription.