- Overgrowth only counts unit deaths the champion has direct vision of. The effect radius is reduced when there is terrain or nearsight blocking direct vision on dying units. Shared vision with other allied units observing the dying units is ignored. Pending for test: Interaction with shared vision of an allied champion that too has Overgrowth
- It would take 4,000 unit deaths to increase maximum health by 100% (1% for every 40 minion death).
- This rune has a similar effect to , an old keystone that existed in Season 6 masteries. Compared to that keystone, Overgrowth is way slower to stack, but doesn't have a cap.