Space bond

When this card enters the battlefield, put {x} galaxy counters on this card.
At the beginning of your upkeep, you may exile 3 target nontoken creature you control, if you do put a galaxy counter on this card.
{10}{w}{u}{b}{r}{g}{t}: Exile this card, remove 10 galaxy counters on this card, create a 30/30 Super Nova creature token with trample, flying, first strike, indestructible