Katara, Waterbending Master

{3}{u}{u}{u}: Monstrosity 3(If this creature
isn't monstrous, put 3 +1/+1 counters on it and
it becomes monstrous.)
As long as Katara, Waterbending Master is monstrous, it has reach, vigilance, and can block
up to 7 additional creatures
{t}: Tap target permanent