Pretty much no one except geist ult heals that much HP in such a short window(just 8s), so even if it did hit multiple targets it doesn't matter, epecially considering that healing was nerfed globally. Such an expensive item needs to be strong by itself instead of requiring some quirky synergy. I like the design, just the 40% is just TOO LOW. Making it steal all healing reduced and only work on healing reduction from this item will make it more viable.