The Ender Dragon

Flying, vigilance, trample
When The Ender Dragon enters the battlefield,
it enters with 5 crystal counters on it. When The
Ender Dragon takes damage, negate it and
remove a crystal counter. If The Ender Dragon
has 1 or more counters on it, it has indestructible.
{3}{b}{b}{b}: Return The Ender Dragon from your graveyard to the battlefield.