As Alexwolf has mentioned multiple times, Deoxys-D is only a threat if it can set up SR and a layer of Spikes. Outspeeding and 2HKOing or being slower but OHKOing should be considered as stopping Deo D as many things can guarantee SR (and if that is too much too handle it's not Deoxys that needs to be banned). Just about any team worth playing can do one of these two things so I wouldn't call him broken.
[01:47:47] <+Limi> gamefreak has confirmed the rumour
[01:47:53] <+Limi> that mewtwo now has a tumor
[01:47:59] <+Limi> but please man, chill out
[01:48:03] <+Limi> you don't need to pout
[01:48:08] <+Limi> just take it all in good humour!
Originally Posted by Fat trickroom
Blizzard is for the whole Dragon Slayer thing, it OHKOes almost any Dragon in the tier save Kyurem, Giratina, Dialga, Palkia, Reshiram, Zekrom, Latios, Latias and Giratina-O.