Now its time for my awfully odd submission!
Sigilyph@Life Orb
Ability: Magic Guard
EV's:92 HP/252 SpA/164 Spe
IV's: 30/2/30/31/30/30
Nature: Timid
-Ice Beam
-Heat Wave
-HP Ground
-Psychic
And there you have it! Sigilyph! I have been a fan of this guy since I first came across him in-game and used him on my somewhat successful VGC team. He was blessed with an ability that totally negates passive damage called Magic Guard. Because of this, he takes no SR damage or LO damage. The EV's and IV's are set to outpacing Hydreigon everytime (Team 2's 2nd fastest pokemon) while maintaining some sort of bulk by throwing the extra EV's into HP. Seeing how Team 2 has 3 pokemon weak to fire, this left their team open to get dismantled by a single Pokemon. Here are some calcs:
252 SpA Life Orb Sigilyph Heat Wave vs. 252 HP / 232+ SpD Celebi: 177-211 (43.81 - 52.22%) -- 77.34% chance to 2HKO after Stealth Rock
252 SpA Life Orb Sigilyph Heat Wave vs. 252 HP / 0 SpD Skarmory: 322-382 (96.4 - 114.37%) -- 81.25% chance to OHKO (guaranteed OHKO after SR)
Scizor gets melted, so there is no point posting the calc. As for Ice Beam:
252 SpA Life Orb Sigilyph Ice Beam vs. 252 HP / 0 SpD Skarmory: 155-182 (46.4 - 54.49%) -- 57.81% chance to 2HKO (guaranteed 2HKO after SR)
252 SpA Life Orb Sigilyph Ice Beam vs. 252 HP / 232+ SpD Celebi: 169-200 (41.83 - 49.5%) -- 28.91% chance to 2HKO after Stealth Rock
252 SpA Life Orb Sigilyph Ice Beam vs. 4 HP / 0 SpD Hydreigon: 250-296 (76.68 - 90.79%) -- 25% chance to OHKO after Stealth Rock
While Ice Beam is only neutral on Skarmory, it will still 2HKO after SR. Celebi will most likely survive, but if it switches into it, Celebi will not be enjoying it either. The move is here mostly for Hydreigon since it has a minor chance to OHKO after SR. HP ground and STAB Psychic are here for Heatran and Keldeo, respectively:
252 SpA Life Orb Sigilyph Hidden Power Ground vs. 0 HP / 4 SpD Heatran: 322-385 (99.69 - 119.19%) -- 93.75% chance to OHKO
252 SpA Life Orb Sigilyph Psychic vs. 4 HP / 0 SpD Keldeo: 354-421 (109.25 - 129.93%) -- guaranteed OHKO
Taken care of without any worries. Heatran has an extremely minor chance at living if at full health, but c'mon...we all know it's fate with or without SR. Anyway, thank you for reading my submission. I honestly do not see anyone taking this selection serious, even though it would work fine, but I do hope this makes people think of using Sigi on their team in the future :]