There's nothing wrong with dragonflies, even though many would be against it. it lets you get auto-mulligan if you only have those, but no immos in your hand. I often use ash eaters instead of photons in my destroyer rushes, for the same reason.
sorry nope.
automulligan only works for 0-cost-cards like pillars/pendulums, sparks, photon, nova or luciferine (& holy flash < upped).
dragonflies cost 1
-> no automulligan here.
its nothing wrong with that deck. just other decks do the same, but slightly better (faster).
on the first sight:
more novas wont hurt this deck (i recommend 3-4)
skipp the skull shield -- -1 dmg is just.... nothing
you dont need cc if you go for ai3 -- skip rof & chaos seed
now you could add some buffs (adrenaline, blessing, monumentum <- pick what you like)
or more creatures - graboid, fire spirit, mindflayer e.g.
yep -- vamp dagger is mutch better then steal