A list of Damage + Defense items
Disclaimer: Not including self-healing items
#For AD Scaling champions:
AD + MR: 
AD + Health: 
AD + Armor: none
Total: 7
#For AP Scaling champions:
AP + Armor: 
AP + MR: 
AP + HP: 
Total: 10
#Special/Both:
AS + MR: 
#Non-damage dual-defense for any champions:
MR + HP:
Armor + HP: 
Mana + HP: 
Mana + Armor: 
Mana + MR: none
MR + Armor: 
Total: 11
#Single-Defense + Special Active/Passive for any:
Armor + AD-focused passive (though mainly bought on AP-scaling tanks): 
MR + Semi-Cleanse: 
MR + Tenacity: 
Armor + auto reduction: 
Total: 4
Key points:
- There are 2 options for buying Armor + AP as an AP champion.
- There are now more defensive items for AP scaling than for AD, though it was equal before.
- You do not have to be playing a tank to purchase a Health and/or Mana+Armor/MR item.
- I have not included self-healing items. With the removal of spellvamp, that's a different topic to be discussed.
