Ok, so let's be serious here. The big reason that Chansey has seen a lot of use in the current metagame as it is a very effective physical stall.
The most common set I've seen in the SM metagame is some variation of this:
Chansey @ Eviolite
Ability: Natural Cure or Serene Grace for Smogon. Healer is very good for VGC.
EVs: 248 HP / 252 Def / 8 SpD
IVs: 0 Atk
Bold Nature
- Seismic Toss
• Does damage equal to the users level so @ level 100 that's a guaranteed 100 damage
- Soft Boiled
• 50% Health Regen
- Heal Bell / Aromatherapy
• Doesn't matter which, essentially the same move
• To cure burn / toxic / paralysis
- Toxic
• Helps against other stalls as poison gets progressively worse each turn
The most common set I've seen in the SM metagame is some variation of this:
Chansey @ Eviolite
Ability: Natural Cure or Serene Grace for Smogon. Healer is very good for VGC.
EVs: 248 HP / 252 Def / 8 SpD
IVs: 0 Atk
Bold Nature
- Seismic Toss
• Does damage equal to the users level so @ level 100 that's a guaranteed 100 damage
- Soft Boiled
• 50% Health Regen
- Heal Bell / Aromatherapy
• Doesn't matter which, essentially the same move
• To cure burn / toxic / paralysis
- Toxic
• Helps against other stalls as poison gets progressively worse each turn