Nasty Plot Torn-T and
Intimidate Milotic are both interesting, but neither really gains much since Torn-T is a fast scout with Regenerator and has 3 common weaknesses and no priority to set up and sweep, Milotic already had a pretty awesome ability in marvel scale.
A mono steel type with
more def at 0 EV than Skarm at 252 EV!?. And it has recovery, rapid spin and a usable 117 base attack!? Awesome. It's special def is rather depresing, but it pairs well with many specially defensive pokemon typing wise, togekiss in particular can cover 2 of the 3 weaknesses and there will always be bulky waters who can stomach a fire blast or two.
Steel Avalugg really should keep it's ice typing though, since it's dex entry in X specifically states that it has a
ice-covered body.
Poison/Steel Weezing will have the following type match ups:
- Immunity: Ground(Levitate), Poison
- 1/4 resistance: Bug, Fairy, Grass
- 1/2 resistance: Dragon, Flying, Ice, Normal, Rock, Steel
- Neutral: Psychic, Fighting, Electric, Water, Dark, Ghost
- 2x Weakness: Fire
i.e. Typing wise Weezing is now Gen IV Bronzong but in Gen VI and with a better set of 1/4 resists along with fun things like wilo-o-wisp, taunt, fire blast, pain split and toxic spikes (sadly no rocks). It walls a fair amount of OU physical attackers including Azumarill, Breloom, Mega Pinsir, Mega Scizor and pretty much anything that relies on Edgequake (except mold breaker exca), but it's frail on the special side and dosn't get reliable recovery.
In short
Steel Avalugg is now the great wall of OU and all around a better mega Aggron in both utility and walling capabilities;
Poison/Steel Weezing is Rotom-W and Skarm rolled into one neat support mon;
Nasty Plot Torn-T is meh, might as well use Thundy if regenerator isn't any help to you.
Intimidate Milotic is neat on paper but now lacks physical def should a physical attacker switches into milotic.