masters call (only rhino, timber wolf and dragonhawk as minions in deck) into hunting party gets you at least a 20 dmg combo for 9 mana, with luck otk for 10 mana (which is completely destroyed by a single taunt minion but still fun)
This card will be played in slower beast hunter builds, not the current "midrange" aggro builds. It will be used to give you 3-5 extra late game beasts(such as King Krush or Oondasta) to outvalue other slower decks.
5 mana do nothing is traditionally the sign of a bad card, all the big beasts are going to way of the dinosaurs, so this is just a voone effect on no body that has proven to not be that good.
Thing is, this is generally going to get you more than Voone does. Hunter runs a lot more beasts than Dragon Warrior does dragons, and there're a lot of beasts that let you retake the board much better than decks with a lot of Dragons do.
Beyond that, the dragons are also more expensive and lower impact. What does 2 Alexstrasza's get you? Or 2 Yseras? The best things you can double are Crowd Roaster, Dragonmaw Scorcher or Emberscale Drake. But the other issue is that Warrior fills up it's hand relatively fast in a way Hunter doesn't.
On the other hand, Hunter potentially gets double Savannah Highmane, Double King Krush, Double Oondasta, Double Scaleworm even an extra Hyena or Springpaw do a lot more for a Hunter deck and Hunter has a lot more trouble filling it's hand.
Not saying it's great but I think there're more factors to consider.