as far as i can see, this is an overpriced snova and an overpriced better snova, sure if you save them all up for one burst then youl get what you want but for that you need all 6 in your hand leaving room for only 2 cards and by that time your opponent probably already killed you by then
dang you nepy, ugh i hate when people type the exact same thing as me but hit enter before me, ugh, but you get the point
Actually, you only need maybe 5 bursts in your hand, so you have 3 dragons left and 6 hourglasses which you use to draw 9 dragons in total. But, yeah, I get your point.
Well, let's look at the popular pillarless immo-nova rush. Novas, photons, immolations...they're all zero-cost cards that mess you up because all you want is a photon and an immolation. So Burst has one advantage of not being zero-cost. In addition, it generates 18 quanta instead of 12 quanta, and each element will always have 2+ quanta after burst is played. Furthermore, it takes 3 turns after the card in question is played before Burst's quanta production drops under nova.
And snova is OP (lol, jk), so i'm not even going to try and defend the upped Burst's usage over Snova.