Since it was my return to Hoenn I decided on a all third generation mega evolution capable team!
I've just become the Hoenn Pokémon League Champion and my team is the following:
#254 Sceptile ♂ Lv.54 @Sceptilite
Met: 11/28/2014 ~ Route 101 ~ Lv. 5
Overgrow ~ Bashful ~ Loves to eat
162 | 108 | 93 | 136 | 106 | 155
Leaf Blade | Giga Drain | Cut | Dual Chop
#282 Gardevoir ♀ Lv. 55 @Gardevoirite
Met: 11/28/2014 ~ Route 102 ~ Lv. 3
Trace ~ Bold ~ Somewhat vain
160 | 87 | 100 | 156 | 155 | 110
Shadow Ball | Psychic | Magical Leaf | Draining Kiss
#310 Manectric ♂ Lv. 53 @Manectite
Met: 11/30/2014 ~ Route 110 ~ Lv. 12
Lightning Rod ~ Hasty ~ Somewhat vain
157 | 103 | 73 | 128 | 85 | 149
Discharge | Thunderbolt | Volt Switch | Wild Charge
#323 Camerupt ♀ Lv. 55 @Amulet Coin
Met: 12/1/2014 ~ Route 112 ~ Lv 15
Solid Rock ~ Naive ~ Likes to thrash about
161 | 141 | 101 | 135 | 88 | 83
Flamethrower | Earth Power | Strength | Earthquake
#319 Sharpedo ♂ Lv. 54 @Rocky Helmet
Met: 12/1/2014 ~ Route 118 ~ Lv. 25
Rough Skin ~ Hardy ~ Likes to thrash about
148 | 160 | 55 | 124 | 55 | 126
Crunch | Surf | Waterfall | Dive
#306 Aggron ♂ Lv. 53 @Aggronite
Met: 12/2/2014 ~ Granite Cave ~ Lv. 11
Rock Head ~ Brave ~ Highly Curious
159 | 154 | 216 | 87 | 82 | 65
Iron Head | Rock Smash | Double-Edge | Rock Slide