Bloodlust: Dealing damage to or taking damage from a champion grants a stack, restoring (2% max Health | 1.2% max Health for Ranged champions) over 6 seconds. Stacks beyond the first heal for 50% less.
Lifeline: Upon taking damage that would reduce your Health below 30%, gain a 100 Shield (increased by (8% max Health | 4.8% max Health for Ranged champions) per stack of Bloodlust) for 4 seconds (60s cooldown).
Bloodlust stacks up to 5 times; 1 per champion. Healing and bonus shielding reduced to 60% for Ranged users.