User blog comment:Draven, the Glorious Executioner/Custom Soraka Rework! (Without Banana-related abilities)/@comment-13536822-20140823202702/@comment-6719710-20140824151906

Any instance of damage meaning ANY damage from champions, a single tick from a minor DoT can pop it. ALSO, i should clarify, it cancels any additional spell effects FROM the tick of damage that it blocks, but does not cancel the entirety of the DoT. AAAAAAALSO, for auto attack modifiers that deal both magic and physical damage, only the higher of the two is blocked, after calculating armor and magic resist ofc.