Terror of Birik

Flying,
Terror of Birik enters the battlefield with x +1+1 counters if x>4 then it enters with 2x +1+1 counters.
if x>6 Terror of Birik enters the battlefield with a trample and menace counter.
if x>8 Terror of Birik enters the battlefield with a double strike counter and create x 2/2 black dragon tokens with flying