Y10 Soul Eater

PASSIVE - Your abilities heal you for 2.5% of damage dealt. Each time anything dies within 80 units you gain a stack. Gods, Large Jungle monsters and Bosses provide 5 stacks. At 100 Stacks Soul Eater Evolves, gaining 15 Physical Power, 4% Physical Lifesteal, and 10% Physical Ability Lifesteal.

Heartseeker

PASSIVE - Your abilities deal an additional 2% of the targets maximum Health as Physical Damage. If you have over 150 Physical Power, your ability bonus damage scales up. This effect reaches a maximum of 6% Maximum Health damage at 250 Physical Power. Subsequent hits on the same target do 75% of the bonus damage for the next 3s.

Chronos' Pendant

PASSIVE - Every 10s the Pendant activates, subtracting 1s from all of your abilities currently on Cooldown. The initial countdown will not start until you leave the fountain.

Lost Artifact