Zendikar's Knight

{t}: Add {g}{g}.
{x}{g}{g}: Monstrosity X. (If this creature isn't
monstrous, put X +1/+1 counters on it and it becomes monstrous.)
As long as Zendikar's Knight is monstrous, it has
"{t}: Add {x}, where X is the number of +1/+1 counters on Zendikar's Knight." and "{1}: Add {g}{g}{g}{g}. This ability can only be used
twice per turn."