Lifesteal
Heal from your auto-attacks.
When you need it
ADCs & AD Bruisers — sustain.
Item examples
Details & formulas
Bloodthirster converts overheal into a shield.
How to counter it
Rush Anti-heal: Executioner's Calling, Mortal Reminder, or Morellonomicon — they cut 40–50% of healing.
Champions that build it
All ADCs (Jinx, Vayne, Tristana), AD fighters (Aatrox, Yone).