Godrick the Grafted

Trample
When Godrick the Grafted enters the battlefield,
you may exile X creature cards from your graveyard.
If you do, Godrick gets +X/+X whenever he attacks.
Sacrifice a dragon: Put X 1/1 counters on Godrick,
where X is that dragon's power. Activate only as a sorcery
"I am the lord of all that is golden"