Wormadam-G

Anticipation
Alerts the Pokémon of certain dangerous moves.
Type Tier
Bug / Ground UU
Statistics
Min- Min Max Max+
HP
60
- 261 324 -
Atk
79
174 194 257 282
Def
105
221 246 309 339
SpA
59
138 154 217 238
SpD
85
185 206 269 295
Spe
36
97 108 171 188
Name Item Nature

The Set

Leftovers Adamant
Moveset EVs
~ Earthquake
~ Rock Blast
~ Toxic
~ Protect
252 HP / 252 Atk / 6 Spe

This set sure looks uninteresting, doesn't it? That's because Wormadam's movelist is shorter than Avat... a really short person. STAB Earthquake is the main attack, Rock Blast hits fliers, and Toxic is for any non-Poison Grass types, as well as bulky waters. Protect scouts Choice Banders and lets Toxic work its magic.

Other Options

Use Fissure and Double Team if those are allowed. You can also do a Sleep Talker, or a Choice Bander, with basically just Earthquake and Rock Blast.

Opinion

Wormadam is the very essence of mediocrity. At least Luvdisc has a movepool and comedy value—I honestly cannot think of any reason to use this or any of the other forms.

Counters

Gligar, Meganium, any defensive Water-type, and 90% of the OU/BL metagame can shake off anything Wormadam does.