Criticly rate my 5th gen pokemon team?

Your pokemon team is perfect. Apart from the fact that you got Thundurus on your team. Yes, he is annoying but he isn't good at all & the moves he learnt have low pp & low accuracy. Thunder is good but remove focus blast. Put something like Ariel ace there. My opinion, don't use legendaries at all. It just ruins a good old classic pokemon battle. If i were to replace Thundurus with a pokemon, I'd replace it with hydreigon. He's a good multi pokemon (good in att, def, speed, sp att and so on). But Thats just my opinion. You don't have/need to take my advice at all. Hope this helped :)