So here it is, in all its cuteness:
Bakkra Horn, the Silent!
Awww. I'm not sure whether he's supposed to be a goat or a horse, but whatever he is, he's cuuute! Anyway, Bakkra Horn has a connection to the great Dragons in the story, and the same holds true for the card. Weak he may be, but for 4 mana you can put a card in your Mana zone for every Dragon creature you summon. This can be useful in the fact that many of the weak early Dragons cost few mana, while the really good ones like Bombazar and Ultimate Dragon cost a lot. So the trick is to cast early Dragons after Bakkra Horn, to be able to summon lots of strong Nature creatures or other Dragons later on in the game. Dragonoids might fit this rule, but that's probably a stretch.
So basically, any Dragon-themed deck with a good smattering of Nature will do the trick here. A Fire/Nature deck would be the best, since you can beef up the Dragons summoned by Bakkra Horn with the appropriate Fire Birds, use creatures like Dracodance Totem in conjunction with them, and then summon Bombazar: Dragon of Destiny late in the game to guarantee the win. And it would all be possible thanks to little Bakkra Horn for letting you stockpile the mana. Though you should try to find a way to protect him, since Fire and Nature have no blockers, and him being destroyed would really cripple the abovementioned strategy.
Ballom's Rating: 4/5. He may be useful, cheap, and utterly adorable, but his weak power lets Bakkra Horn down.