Such a great tier, easily my favourite. I find that it is quite similar to Balanced Hackmons, although slightly less aggressive with less Contrary users/attacking moves etc. This can probably be attributed to Wonder Guard though. If I was going to give tips to making a Pure Hackmons team I'd say the following:
You must account for:
- Wonder Guard (whether it's on Spiritomb/Sableye or on a Jolteon/Electrode/other electric type with a Balloon).
- Imposter Blissey
- Giratina, usually with Magic Bounce. But have also seen Curse/Perish Trappers and many others. Commonly used as it's the most bulky pokemon.
- Deoxys-S, usually with No Guard-Sheer Cold or Mold Breaker Spore.
I'd say these are 4 of the main threats, there are obviously many others. All can be easily accounted for, but without necessary preparation can easily defeat a team on their own.