With the recent release of Pokemon X/Y, I'm planning on going into competitive battling (and to prove to my friend that hacked ubers with wonderguard mean NOTHING in competitive battling). I am very new to competitive battling but have a basic grasp on things (EV, IV, sweepers, walls), so lots of help is appreciated. Be harsh.
Spiritomb @Leftovers
Trait: Pressure
EV: 252 HP / 252 SpDef / 4 SpAtk
Nature: Calm (+SpDef, -Atk)
-Calm Mind
-Dark Pulse
-Rest
-Sleep Talk
Aggron @Leftovers/Aggronite
Trait: Rock Head
EV: 52 HP / 252 Atk / 204 Spd
Nature: Adamant (+Atk, -SpAtk)
-Iron Head
-Dragon Tail
-Earthquake
-Stealth Rock
Charizard Y @Charizardite Y
Trait: Blaze/Drought (When Mega Evolved)
EV: 252 SpAtk / 252 Spd / 4 HP
Nature: Timid (+Spd, -Atk)
-Flamethrower
-Solar Beam,
-Dragon Pulse
-Air Slash
Drapion @Razor Claw/Scope Lens
Trait: Sniper
EV: 252 Atk / 156 HP / 100 Spd
Nature: Naughty (+Atk, -SpDef)
-Toxic Spikes
-Night Slash
-Cross Poison
-Ice Fang
Vaporeon @Leftovers
Trait: Water Absorb
EV: 252 HP / 252 SpAtk / 4 SpDef
Nature: Modest (+SpAtk, -Atk)
-Acid Armour
-Scald
-Wish
-Ice beam
Snorlax @Chesto Berry
Trait: Thick Fat
EV: 252 Def / 128 SpDef / 128 HP
Nature: Impish
-Rest
-Recycle
-Belly Drum
-Zen headbutt