So, quoting what the passive is on PBE:
"Unique Passive - Essence Drain: While damaging champions, increase the damage you deal by 10% (max 2% per second)."
To me, the wording on this is confusing as hell. How can you be increasing your damage dealt by 10%, but maxing at 2% per second? It's like saying distance and velocity as the same units. Could someone explain how exactly this passive works, and even better, can someone figure out a less confusing way of stating it, pending that I'm not the only one confused by this.
Edit : I know what the item is designed for. My confusion is in how it works.