Tiamat

Flying, Trample, Menace
For every dragon you own Tiamat gets
+1/+1.
When Tiamat comes into play it gets five
+1/+1 counters on it.
{3}{t}: take of two +1/+1 counters off of Tiamat, World Destroyer, you gain 2 life or target opponent loses 2 life.