I personally really like this team. It's creative and you seem to really master the use of relatively unpopular pokemon in ubers. I've tried using this team and it was extremely difficult seeing as I found Ho-Oh was not bulky enough due to Life Orb and I had problems with Kyogre and some with Dialga. Even though Ho-Oh could probably take on Dialga on his own, there seemed to be way too much pressure of keeping him alive for other specially based threats. I found Shaymin a little too weak as a revenge killer, despite being fast and all. I don't know how you do it trickroom, first you put Gyarados to good use, now Birds, even with the Ice, Electric, and Stealth Rock weakness (maybe giving me a few pointers on how to use this team maybe?) Also, once 6th gen comes out Yveltal is definitely a candidate for the tribe of elite birds. I don't really see Shaymin S as a bird though due to the fact that he is a mammal with no beak, talons, or feathers who flies with Dumbo elephant ears, but he does check Kyogre, Groudon, and in some cases Palkia very well. Although, he kinda didn't do his job in flinch haxing very well in my experience.