Geometric Convergence

When Geometric Convergence enters the battlefield, you may pay any amount of mana, if
you do, put that many geometry counters on it
and it enters tapped.
{t}: add {c}.
{3}{g/u}, {t}, Sacrifice Geometric Convergence:
create a 0/0 green and blue fractal creature token, put
X +1/+1 counters on it, where X is the number of geometry counters on Geometric Convergence as this ability resolves.