Mario and Goli, Reunited

Mario and Goli, Reunited enters the battlefield
with two +1/+1 counters on it.
Whenever Mario and Goli, Reunited enters the battlefield, you get {e}{e}{e}{e}{e}.
{t}, Pay {e}: Proliferate.
{ut}, Pay {e}: Proliferate.
Maronne, senti qua'!