They are useful too but an eternity will put an oppenent in a card lockdown
But Eternity does cost 3 time quanta per turn, which might be too much for the amount if pillars you have.
It would not always be that way you have 6 novas = 6 time quanta = eternity, and pillars with also generate your quanta so it won't always be played, actually there is a good chance it wouldn't be played, but it's still a heavy hitter. If it's still quantum heavy lobo, like your suggestion, or morning star is good too.