Bulky Offense is rather new to me, but after having my Hyper Offense teams wrecked by walls, i decided to change things around a bit.
Tyranitar - Role - Hazard Setter
Ability: Sand Stream
Item: Chople Berry
Nature - Relaxed (Speed down, Attack Up)
EVS - 212 HP, 180 Special Defense, 80 Defense, 36 Attack
Stone Edge/Rock Slide
The main pokemon of the team, and the one on the field the most. Not an imaginative set, but it works well. Stealth Rock cripples fire or flying pokemon that trouble Mega Venasaur, while payback breaks the psychic types (except gardevoir) that threaten Mega Venasaur with psychic.
Stone Edge was my initial choice for STAB,but it misses at the worst times, so i tried running Rock Slide. Still in limbo about which one to choose, both having their merits.
Venusaur (Mega) - Role - Tyranitar Defender/Fairy Counter
Ability: Thick Fat
Item - Venasaurite
Nature - Timid
EVs - 248 HP, 96 Defense, 144 Special Defense, 20 Speed
Type wise, the perfect partner to Tyranitar. If Tyranitar cannot handle it, 80% of the time, Venusaur can, and plus two of his weaknesses are removed by mega evolving. Venusaur doesn't usually KO things, he tends to stall so Stealth Rock inflicts maximum damage. After playing, I realized that Steels were a problem. Venasaur didn't have room for earthquake, and Tyranitar is too slow to land earthquake. Cue entry three:
Garchomp - Role - Late Game Sweeper
Ability: Rough Skin (HA)
EVs - 252 Attack, 252 Speed, 4 HP
The 'mix' part of the team. Garchomp is the fastest, and hardest hitting member of my team. Usually, i send her out near the end of the game, to mop up the team after it has been worn down by stealth rock and toxic. Obviously her natural bulk helps greatly, but moonblast and ice beam both destroy her easily. Iron Head is mainly for the switch, or half way through a sweep. Unfortunately, She needs a good water type counter companion (as most water types use ice beam).
However, I also use her to defeat steels, excluding Ferrothorn and Skarmory. These two steels needed a special counter - fire.
Heatran - Special Wall/Steel Counter
Item - Assault Vest
Ability - Flash Fire
Nature - Modest
EVS - 252 HP, 252 Special Attack, 4 Special Defense
Heatran is my special wall, and also my counter to pokemon like Skarmory and Ferrothorn. She can also beat any grounded steel using flamethrower and earth power (and also any other heatran).
Solar Beam is more of a filler move, although it punishes switch ins with water types heavily, if predicted. However, it is usually safer to use another pokemon. Looking at my party, i realised water types with ice moves destroyed me rather easily, and mega venusaur was my only counter.
Lapras (Lucy) - Water Counter/Ice STAB Abuse/Bulky Late Game Sweeper
Item - Never Melt Ice
Ability - Water Absorb
Nature - Modest
EVs - 252 HP, 252 Special Attack, 4 Special Defense
I'm sure quite a few people are crying inside at this choice. Yes, Lapras isn't as bulky as I'd like. Yes it usually only lands a handful of moves. Yes, the Ice Typing is a pain.
Let me say two words - Freeze Dry.
The only reason i use Lapras, is Freeze Dry, and (ironically) her water/ice typing. Her typing lets her tank ice attacks, and her ability neutralises Surf/Hydro Pumps directed at Heatran, and help restore her.
Leftovers is probably a better fit, but the more damage freeze dry outputs, the deadlier she gets, and that one move is her primary usage. Psychic punishes fighting switch ins trying to hit her ice typing, and then it is accuracy battle. Hydro Pump hits harder and nets more KOs, but like Stone Edge, misses at horrible moments, and with no recovery, that's risky for her.
Milotic - Toxic Wall/Special Move Deterrent
Item - Leftovers
Ability - Marvel Scale
Nature - Bold
EVs - 252 HP, 160 Defense, 96 Special Attack
At first glance, a bulky water doesn't fit on the team. But, combined with stealth rock and toxic, Milotic can provide just enough stall to push the enemy over the edge.
The 'anti-taunt' moveslot was torn between ice beam and scald. However, Scald interfered with Toxic strategies, although the burns can be useful on physical sweepers.
Recover combined with leftovers ensures Milotic stays on the field, and the recovers mitigates any potential sandstorm damage.
Mirror Coat is a surprise move that is hellish to get onto Milotic, but plays havoc with enemies utilising thunderbolt, or sets that only have special attacks. Combine that with Recover, Milotic is a very effective stall pokemon for this team. The only immediate problem is that Recover runs out of PP very easily.
PS. Sorry for no artwork, my pictures were far too big.