Grievous Wounds is a debuff that reduces all healing received by 40%.
Sources
Champion abilities
Items
Spells
Notes
- Shields are a way of temporarily adding health to a champion that is not reduced by Grievous Wounds.
| Type |   Heal and Shield Power
|  Spirit Visage
|  Revitalize
|  Grievous Wounds
|
|---|---|---|---|---|
 Health regeneration |  |  | |
|
 Life steal | | | |
|
 Spell vamp | | | |
|
 Drain effects | | | |
|
| Self heals | | | |
|
| Self shields | | | |
|
| Incoming heals | | | |
|
| Incoming shields | | | |
|
| Outgoing heals | | | |
|
| Outgoing shields | | | |
|
 Bonus health | | | |
|
Strategy
- Grievous Wounds is generally used to limit or minimize the healing, health regeneration or life steal of one enemy champion ability such as
Darius' Decimate, Renekton's Cull the Meek or Volibear's Chosen of the Storm. It can also weaken burst healing champions such as Dr. Mundo, Fiora, Mordekaiser, Swain, Trundle, Vladimir or Warwick.
- Grievous Wounds isn't useful just against champions with in-built sustain. Some champions (examples include most ADCs) can build items that give them sustain, such as Death's Dance, Hextech Gunblade or The Bloodthirster. Grievous Wounds is also useful against them. This is important to notice especially in situations where technically there is no champions with natural sustain on the enemy team, but the enemy ADC has massive amounts of lifesteal to sustain itself during teamfights.
- On other hand, some champions only have sustain when out of combat. This includes Garen, Tahm Kench, and champions that build Warmog's Armor. Grievous Wounds is not effective against those champions; the most effective way to prevent them from healing is to force them to stay in combat.
- It is important to note that Grievous Wounds also affect healing from outside sources instead of just self-healing. This is especially important against Soraka, which can use Astral Infusion to outsustain her enemies, even if her allies don't have sustain themselves.
- Grievous Wounds isn't useful just against champions with in-built sustain. Some champions (examples include most ADCs) can build items that give them sustain, such as
- Grievous Wounds, alongside Frozen Heart, Randuin's Omen or Warden's Mail, is a great counter to Udyr's Turtle Stance and Xin Zhao's Determination.
- Grievous Wounds won't affect Sion's Glory in Death and disappears if a champion dies. Though it will still be applied if a champion revives (e.g. Aatrox's World Ender or Zilean's Chronoshift).
