Personally I don't think you need that many attackers. I use Darkrai, Hydreigon and Victini EX (and even then I'm considering getting rid of the Victini). The deck doesn't really need any kind of counter cards like Genesect or Giratina and such. Hydreigon hits for 170 with a bangle which OHKO's a good majority of this format's prominent EX's such as Keldeo, Genesect, Virizion and etc. I feel if you want a tech attacker in the deck then Victini EX has the best overall usage in that it counters Genesect pretty well while also providing a useful Turbo Energize should you get stuck with one in the active T1.