Kayle, The Righteous

At the beginning of your end step, if you've attacked this turn put a +1/+1 on Kayle.

As long as Kayle has six or more counters on it, it has first strike and flying.

As long as Kayle has eleven or more counters on it, it
has double strike and lifelink

As long as Kayle has eighteen or more counters on it, it
has protection from everything and +X/+X where X is the total amount of counters on creatures you control