^ That is the kind of talk that showed up on my mass adrenaline page! It is not a sky blitz. Sky blitz is used with dragons and such for an OTK, or at least ~50 damage. I hate to tell you but a frog will not deal ~50 damage.
Let me put it like this: Don't think of it as a multiplier. Think of it additively. Let's say sky blitz is used on a bunch of dragons with 10 attack in which case it is +10|+0 for a turn on each creature you have.
Meanwhile this card, with +5|+0 will just give, well, +5|+0. So sky blitz is not comparable to this card at all.
An card that deals 5 damage to the opponent is worth 1 quanta (not 2, since it cannot target creatures as Lightning can). That means sky blitz is twice as good as this card, therefore warranting the high cost and quanta draw.
This card will be fine with +5|+0.