Nagak, Orphaned

Flying, can't attack or block.
When Nagak enters the battlefield put X
-1/-1 counters on it.
{2}{u}, Remove a -1/-1 counter from Nagak: Nagak can attack and block this turn.
"What he is, no one knows. Who his spawn, no one knows. His myth and legend, everyone knows." -Benefa nursery song