When two cards are combined into one without mana cost increase, it is usually a pretty good one. So, maybe it is stronger than it might seem, but I agree it doesn't seem very strong for now. If the buff was +2/+1, I'd be more into it.
The other breath spells are so good you'd consider building a deck just for them. For Paladin it seems that Cathedral Gargoyle and Dragon Speaker were meant to be the main reasons and this is just a little extra.
I think the other breaths are a lot more powerful because they don’t have as much dragon synergy. As for warrior and paladin they both already have some dragon themed cards. Kinda sucks though, was hoping for mor on this one.
Very strong but very low value. I don't think it will be played much but if pally can draw enough cards and beat people on turn 4/5 then maybe this is used just to add up the damage in the early game and stay on the board. but then you add the tax of playing dragons and it seems weak. so with like an agro dragon in the pally pool and the neutral pool this might see play but they'd need to be pretty stronk
divine shield cannot be underestimated imagine you play this and nozdormu at turn 5 you will have 5 mana 9/10 with divine shield you might corner your opponent if he doesn't have a big removal at hand.