Gameplay-wise, what does your main champ do better than any other champ in the game?

In other words, what's your main champ's biggest strength? Some examples that I can think of are:

  • Shaco - baiting melee champions
  • Rammus - countering high attack speed auto-attackers
  • Talon - killing a single target in jungle skirmishes
  • Swain - drain tanking against multiple melees
  • Zac - long range tank engage
  • Anivia - stalling melee comps

What are some others?