Alright if you really want to make your opponent rage, you have to make them feel like they have no control over the game; that it is completely out of their hands. This core does that:
Wobbuffet (F) @ Leftovers
Trait: Shadow Tag
EVs: 200 HP / 56 Def / 252 Spd
Timid Nature (+Spd, -Atk)
- Encore
- Mirror Coat
- Counter
- Safeguard
Politoed (F) @ Leftovers
Trait: Drizzle
EVs: 252 HP / 252 Def / 4 SDef
Bold Nature (+Def, -Atk)
- Scald
- Hypnosis
- Perish Song
- Protect
Politoed was chosen because he is by far the most used perish song abuser. The way it works is to Perish Song on a threat, the best being a slow wall. After you Perish Song, you switch out into Wobbufett. If your Wobbufett can Encore the opposing pokemon on a set-up move, or the opposing pokemon doesn't have a super effective move congratulations! When that is done, you have taken down an opposing Pokemon guaranteed. This tactic is especially useful for taking apart defensive cores that might otherwise give you trouble. This strategy is made even more effective by Perish Song+U-turn Celebi. With U-turn, you can know for sure that your opponent pokemon will be in to stay trapped.