This spell can be used to save a life when low on health and under attack. It is commonly used to get an early first blood by healing oneself for more than one's opponent expects. It is also a skill used for "baiting", where you make your champion appear weaker than it actually is, to lure your enemies out of position or to get them to tower dive you. A similar baiting tactic is also commonly used with Barrier.
This summoner spell is considered by many to be vastly superior to Barrier for a number of reasons - the heal is permanent, affects two people instead of one, and gives a 30% speed boost to yourself and your ally. However, Barrier is not affected by [[File:Plantilla:Tip data/Grievous wounds|20px|link=Plantilla:Tip data/Grievous wounds]][[File:Plantilla:Tip data/Grievous wounds|20px|link=Plantilla:Tip data/Grievous wounds]][[File:Plantilla:Tip data/Grievous wounds|20px|link=Plantilla:Tip data/Grievous wounds]] [[:Plantilla:Tip data/Grievous wounds|Grievous Wounds]], has a shorter cooldown, blocks more damage (against a single target), and can be used while you're still at full health (good against 100-to-0 burst).
Improved Heal reduced to 10% extra healing from 15%.
Heal amount per level increased to 25 from 20.
Improved Heal no longer reduces the cooldown but now increases the amount healed by 15%.
Heal now removes stealth when used.
Mender's Faith (mastery) changed to 30 second cooldown reduction on Heal, from +10 × level health bonus.
A debuff is now placed on champions healed by Summoner Heal for 25 seconds. Subsequent Summoner Heals will have their effect diminished by 50% on allies with the debuff. Your Champion will still receive the full amount of the heal if cast by your Summoner.
Mender's Faith (mastery) now provides 10 × level bonus health on Summoner Heal from 75 flat bonus health and 10 seconds cooldown reduction.
Cast range updated.
Reduced area of effect healing to 50% of total from 60%.
June 26, 2009 Patch
Mender's Faith (mastery): Increases the amount healed by Heal by 75, and reduces the cooldown by 10 seconds.
June 12, 2009 Patch
Now scales with level, Heal now = 150 + 25 × Level, and heals surrounding allies for 66% (heals less early, and more late).
Alpha Week 4
Heal cooldown increased to 5 minutes from 4.5 minutes.
Mender's Faith (mastery) increased Heal amount by 75 instead of 100.